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 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 ******************************************************************************/
28 #include "i40e_prototype.h"
29 static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter);
30 static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter);
31 static void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter);
32 static void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter);
33 static int i40evf_close(struct net_device *netdev);
35 char i40evf_driver_name[] = "i40evf";
36 static const char i40evf_driver_string[] =
37 "Intel(R) XL710 X710 Virtual Function Network Driver";
39 #define DRV_VERSION "0.9.23"
40 const char i40evf_driver_version[] = DRV_VERSION;
41 static const char i40evf_copyright[] =
42 "Copyright (c) 2013 - 2014 Intel Corporation.";
44 /* i40evf_pci_tbl - PCI Device ID Table
46 * Wildcard entries (PCI_ANY_ID) should come last
47 * Last entry must be all 0s
49 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
50 * Class, Class Mask, private data (not used) }
52 static DEFINE_PCI_DEVICE_TABLE(i40evf_pci_tbl) = {
53 {PCI_VDEVICE(INTEL, I40E_DEV_ID_VF), 0},
54 /* required last entry */
58 MODULE_DEVICE_TABLE(pci, i40evf_pci_tbl);
60 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
61 MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver");
62 MODULE_LICENSE("GPL");
63 MODULE_VERSION(DRV_VERSION);
66 * i40evf_allocate_dma_mem_d - OS specific memory alloc for shared code
67 * @hw: pointer to the HW structure
68 * @mem: ptr to mem struct to fill out
69 * @size: size of memory requested
70 * @alignment: what to align the allocation to
72 i40e_status i40evf_allocate_dma_mem_d(struct i40e_hw *hw,
73 struct i40e_dma_mem *mem,
74 u64 size, u32 alignment)
76 struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back;
79 return I40E_ERR_PARAM;
81 mem->size = ALIGN(size, alignment);
82 mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
83 (dma_addr_t *)&mem->pa, GFP_KERNEL);
87 return I40E_ERR_NO_MEMORY;
91 * i40evf_free_dma_mem_d - OS specific memory free for shared code
92 * @hw: pointer to the HW structure
93 * @mem: ptr to mem struct to free
95 i40e_status i40evf_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
97 struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back;
100 return I40E_ERR_PARAM;
101 dma_free_coherent(&adapter->pdev->dev, mem->size,
102 mem->va, (dma_addr_t)mem->pa);
107 * i40evf_allocate_virt_mem_d - OS specific memory alloc for shared code
108 * @hw: pointer to the HW structure
109 * @mem: ptr to mem struct to fill out
110 * @size: size of memory requested
112 i40e_status i40evf_allocate_virt_mem_d(struct i40e_hw *hw,
113 struct i40e_virt_mem *mem, u32 size)
116 return I40E_ERR_PARAM;
119 mem->va = kzalloc(size, GFP_KERNEL);
124 return I40E_ERR_NO_MEMORY;
128 * i40evf_free_virt_mem_d - OS specific memory free for shared code
129 * @hw: pointer to the HW structure
130 * @mem: ptr to mem struct to free
132 i40e_status i40evf_free_virt_mem_d(struct i40e_hw *hw,
133 struct i40e_virt_mem *mem)
136 return I40E_ERR_PARAM;
138 /* it's ok to kfree a NULL pointer */
145 * i40evf_debug_d - OS dependent version of debug printing
146 * @hw: pointer to the HW structure
147 * @mask: debug level mask
148 * @fmt_str: printf-type format description
150 void i40evf_debug_d(void *hw, u32 mask, char *fmt_str, ...)
155 if (!(mask & ((struct i40e_hw *)hw)->debug_mask))
158 va_start(argptr, fmt_str);
159 vsnprintf(buf, sizeof(buf), fmt_str, argptr);
162 /* the debug string is already formatted with a newline */
167 * i40evf_tx_timeout - Respond to a Tx Hang
168 * @netdev: network interface device structure
170 static void i40evf_tx_timeout(struct net_device *netdev)
172 struct i40evf_adapter *adapter = netdev_priv(netdev);
174 adapter->tx_timeout_count++;
175 dev_info(&adapter->pdev->dev, "TX timeout detected.\n");
176 if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING)) {
177 adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
178 schedule_work(&adapter->reset_task);
183 * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC
184 * @adapter: board private structure
186 static void i40evf_misc_irq_disable(struct i40evf_adapter *adapter)
188 struct i40e_hw *hw = &adapter->hw;
189 wr32(hw, I40E_VFINT_DYN_CTL01, 0);
192 rd32(hw, I40E_VFGEN_RSTAT);
194 synchronize_irq(adapter->msix_entries[0].vector);
198 * i40evf_misc_irq_enable - Enable default interrupt generation settings
199 * @adapter: board private structure
201 static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter)
203 struct i40e_hw *hw = &adapter->hw;
204 wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK |
205 I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);
206 wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA_ADMINQ_MASK);
209 rd32(hw, I40E_VFGEN_RSTAT);
213 * i40evf_irq_disable - Mask off interrupt generation on the NIC
214 * @adapter: board private structure
216 static void i40evf_irq_disable(struct i40evf_adapter *adapter)
219 struct i40e_hw *hw = &adapter->hw;
221 if (!adapter->msix_entries)
224 for (i = 1; i < adapter->num_msix_vectors; i++) {
225 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), 0);
226 synchronize_irq(adapter->msix_entries[i].vector);
229 rd32(hw, I40E_VFGEN_RSTAT);
234 * i40evf_irq_enable_queues - Enable interrupt for specified queues
235 * @adapter: board private structure
236 * @mask: bitmap of queues to enable
238 void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask)
240 struct i40e_hw *hw = &adapter->hw;
243 for (i = 1; i < adapter->num_msix_vectors; i++) {
244 if (mask & (1 << (i - 1))) {
245 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1),
246 I40E_VFINT_DYN_CTLN1_INTENA_MASK |
247 I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
253 * i40evf_fire_sw_int - Generate SW interrupt for specified vectors
254 * @adapter: board private structure
255 * @mask: bitmap of vectors to trigger
257 static void i40evf_fire_sw_int(struct i40evf_adapter *adapter,
260 struct i40e_hw *hw = &adapter->hw;
264 for (i = 1; i < adapter->num_msix_vectors; i++) {
265 if (mask & (1 << i)) {
266 dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1));
267 dyn_ctl |= I40E_VFINT_DYN_CTLN_SWINT_TRIG_MASK |
268 I40E_VFINT_DYN_CTLN_CLEARPBA_MASK;
269 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl);
275 * i40evf_irq_enable - Enable default interrupt generation settings
276 * @adapter: board private structure
278 void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush)
280 struct i40e_hw *hw = &adapter->hw;
282 i40evf_irq_enable_queues(adapter, ~0);
285 rd32(hw, I40E_VFGEN_RSTAT);
289 * i40evf_msix_aq - Interrupt handler for vector 0
290 * @irq: interrupt number
291 * @data: pointer to netdev
293 static irqreturn_t i40evf_msix_aq(int irq, void *data)
295 struct net_device *netdev = data;
296 struct i40evf_adapter *adapter = netdev_priv(netdev);
297 struct i40e_hw *hw = &adapter->hw;
301 /* handle non-queue interrupts */
302 val = rd32(hw, I40E_VFINT_ICR01);
303 ena_mask = rd32(hw, I40E_VFINT_ICR0_ENA1);
306 val = rd32(hw, I40E_VFINT_DYN_CTL01);
307 val = val | I40E_PFINT_DYN_CTL0_CLEARPBA_MASK;
308 wr32(hw, I40E_VFINT_DYN_CTL01, val);
310 /* re-enable interrupt causes */
311 wr32(hw, I40E_VFINT_ICR0_ENA1, ena_mask);
312 wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK);
314 /* schedule work on the private workqueue */
315 schedule_work(&adapter->adminq_task);
321 * i40evf_msix_clean_rings - MSIX mode Interrupt Handler
322 * @irq: interrupt number
323 * @data: pointer to a q_vector
325 static irqreturn_t i40evf_msix_clean_rings(int irq, void *data)
327 struct i40e_q_vector *q_vector = data;
329 if (!q_vector->tx.ring && !q_vector->rx.ring)
332 napi_schedule(&q_vector->napi);
338 * i40evf_map_vector_to_rxq - associate irqs with rx queues
339 * @adapter: board private structure
340 * @v_idx: interrupt number
341 * @r_idx: queue number
344 i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx)
346 struct i40e_q_vector *q_vector = adapter->q_vector[v_idx];
347 struct i40e_ring *rx_ring = adapter->rx_rings[r_idx];
349 rx_ring->q_vector = q_vector;
350 rx_ring->next = q_vector->rx.ring;
351 rx_ring->vsi = &adapter->vsi;
352 q_vector->rx.ring = rx_ring;
353 q_vector->rx.count++;
354 q_vector->rx.latency_range = I40E_LOW_LATENCY;
358 * i40evf_map_vector_to_txq - associate irqs with tx queues
359 * @adapter: board private structure
360 * @v_idx: interrupt number
361 * @t_idx: queue number
364 i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx)
366 struct i40e_q_vector *q_vector = adapter->q_vector[v_idx];
367 struct i40e_ring *tx_ring = adapter->tx_rings[t_idx];
369 tx_ring->q_vector = q_vector;
370 tx_ring->next = q_vector->tx.ring;
371 tx_ring->vsi = &adapter->vsi;
372 q_vector->tx.ring = tx_ring;
373 q_vector->tx.count++;
374 q_vector->tx.latency_range = I40E_LOW_LATENCY;
375 q_vector->num_ringpairs++;
376 q_vector->ring_mask |= (1 << t_idx);
380 * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors
381 * @adapter: board private structure to initialize
383 * This function maps descriptor rings to the queue-specific vectors
384 * we were allotted through the MSI-X enabling code. Ideally, we'd have
385 * one vector per ring/queue, but on a constrained vector budget, we
386 * group the rings as "efficiently" as possible. You would add new
387 * mapping configurations in here.
389 static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter)
393 int rxr_idx = 0, txr_idx = 0;
394 int rxr_remaining = adapter->vsi_res->num_queue_pairs;
395 int txr_remaining = adapter->vsi_res->num_queue_pairs;
400 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
402 /* The ideal configuration...
403 * We have enough vectors to map one per queue.
405 if (q_vectors == (rxr_remaining * 2)) {
406 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
407 i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx);
409 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
410 i40evf_map_vector_to_txq(adapter, v_start, txr_idx);
414 /* If we don't have enough vectors for a 1-to-1
415 * mapping, we'll have to group them so there are
416 * multiple queues per vector.
417 * Re-adjusting *qpv takes care of the remainder.
419 for (i = v_start; i < q_vectors; i++) {
420 rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
421 for (j = 0; j < rqpv; j++) {
422 i40evf_map_vector_to_rxq(adapter, i, rxr_idx);
427 for (i = v_start; i < q_vectors; i++) {
428 tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
429 for (j = 0; j < tqpv; j++) {
430 i40evf_map_vector_to_txq(adapter, i, txr_idx);
437 adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS;
443 * i40evf_request_traffic_irqs - Initialize MSI-X interrupts
444 * @adapter: board private structure
446 * Allocates MSI-X vectors for tx and rx handling, and requests
447 * interrupts from the kernel.
450 i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename)
452 int vector, err, q_vectors;
453 int rx_int_idx = 0, tx_int_idx = 0;
455 i40evf_irq_disable(adapter);
456 /* Decrement for Other and TCP Timer vectors */
457 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
459 for (vector = 0; vector < q_vectors; vector++) {
460 struct i40e_q_vector *q_vector = adapter->q_vector[vector];
462 if (q_vector->tx.ring && q_vector->rx.ring) {
463 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
464 "i40evf-%s-%s-%d", basename,
465 "TxRx", rx_int_idx++);
467 } else if (q_vector->rx.ring) {
468 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
469 "i40evf-%s-%s-%d", basename,
471 } else if (q_vector->tx.ring) {
472 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
473 "i40evf-%s-%s-%d", basename,
476 /* skip this unused q_vector */
480 adapter->msix_entries[vector + NONQ_VECS].vector,
481 i40evf_msix_clean_rings,
486 dev_info(&adapter->pdev->dev,
487 "%s: request_irq failed, error: %d\n",
489 goto free_queue_irqs;
491 /* assign the mask for this irq */
492 irq_set_affinity_hint(
493 adapter->msix_entries[vector + NONQ_VECS].vector,
494 q_vector->affinity_mask);
502 irq_set_affinity_hint(
503 adapter->msix_entries[vector + NONQ_VECS].vector,
505 free_irq(adapter->msix_entries[vector + NONQ_VECS].vector,
506 adapter->q_vector[vector]);
512 * i40evf_request_misc_irq - Initialize MSI-X interrupts
513 * @adapter: board private structure
515 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This
516 * vector is only for the admin queue, and stays active even when the netdev
519 static int i40evf_request_misc_irq(struct i40evf_adapter *adapter)
521 struct net_device *netdev = adapter->netdev;
524 sprintf(adapter->misc_vector_name, "i40evf:mbx");
525 err = request_irq(adapter->msix_entries[0].vector,
527 adapter->misc_vector_name, netdev);
529 dev_err(&adapter->pdev->dev,
530 "request_irq for %s failed: %d\n",
531 adapter->misc_vector_name, err);
532 free_irq(adapter->msix_entries[0].vector, netdev);
538 * i40evf_free_traffic_irqs - Free MSI-X interrupts
539 * @adapter: board private structure
541 * Frees all MSI-X vectors other than 0.
543 static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter)
547 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
549 for (i = 0; i < q_vectors; i++) {
550 irq_set_affinity_hint(adapter->msix_entries[i+1].vector,
552 free_irq(adapter->msix_entries[i+1].vector,
553 adapter->q_vector[i]);
558 * i40evf_free_misc_irq - Free MSI-X miscellaneous vector
559 * @adapter: board private structure
561 * Frees MSI-X vector 0.
563 static void i40evf_free_misc_irq(struct i40evf_adapter *adapter)
565 struct net_device *netdev = adapter->netdev;
567 free_irq(adapter->msix_entries[0].vector, netdev);
571 * i40evf_configure_tx - Configure Transmit Unit after Reset
572 * @adapter: board private structure
574 * Configure the Tx unit of the MAC after a reset.
576 static void i40evf_configure_tx(struct i40evf_adapter *adapter)
578 struct i40e_hw *hw = &adapter->hw;
580 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
581 adapter->tx_rings[i]->tail = hw->hw_addr + I40E_QTX_TAIL1(i);
585 * i40evf_configure_rx - Configure Receive Unit after Reset
586 * @adapter: board private structure
588 * Configure the Rx unit of the MAC after a reset.
590 static void i40evf_configure_rx(struct i40evf_adapter *adapter)
592 struct i40e_hw *hw = &adapter->hw;
593 struct net_device *netdev = adapter->netdev;
594 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
599 adapter->flags &= ~I40EVF_FLAG_RX_PS_CAPABLE;
600 adapter->flags |= I40EVF_FLAG_RX_1BUF_CAPABLE;
602 /* Decide whether to use packet split mode or not */
603 if (netdev->mtu > ETH_DATA_LEN) {
604 if (adapter->flags & I40EVF_FLAG_RX_PS_CAPABLE)
605 adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED;
607 adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED;
609 if (adapter->flags & I40EVF_FLAG_RX_1BUF_CAPABLE)
610 adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED;
612 adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED;
615 /* Set the RX buffer length according to the mode */
616 if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) {
617 rx_buf_len = I40E_RX_HDR_SIZE;
619 if (netdev->mtu <= ETH_DATA_LEN)
620 rx_buf_len = I40EVF_RXBUFFER_2048;
622 rx_buf_len = ALIGN(max_frame, 1024);
625 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
626 adapter->rx_rings[i]->tail = hw->hw_addr + I40E_QRX_TAIL1(i);
627 adapter->rx_rings[i]->rx_buf_len = rx_buf_len;
632 * i40evf_find_vlan - Search filter list for specific vlan filter
633 * @adapter: board private structure
636 * Returns ptr to the filter object or NULL
639 i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan)
641 struct i40evf_vlan_filter *f;
643 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
651 * i40evf_add_vlan - Add a vlan filter to the list
652 * @adapter: board private structure
655 * Returns ptr to the filter object or NULL when no memory available.
658 i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan)
660 struct i40evf_vlan_filter *f;
662 f = i40evf_find_vlan(adapter, vlan);
664 f = kzalloc(sizeof(*f), GFP_ATOMIC);
666 dev_info(&adapter->pdev->dev,
667 "%s: no memory for new VLAN filter\n",
673 INIT_LIST_HEAD(&f->list);
674 list_add(&f->list, &adapter->vlan_filter_list);
676 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
683 * i40evf_del_vlan - Remove a vlan filter from the list
684 * @adapter: board private structure
687 static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan)
689 struct i40evf_vlan_filter *f;
691 f = i40evf_find_vlan(adapter, vlan);
694 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
699 * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device
700 * @netdev: network device struct
703 static int i40evf_vlan_rx_add_vid(struct net_device *netdev,
704 __always_unused __be16 proto, u16 vid)
706 struct i40evf_adapter *adapter = netdev_priv(netdev);
708 if (i40evf_add_vlan(adapter, vid) == NULL)
714 * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device
715 * @netdev: network device struct
718 static int i40evf_vlan_rx_kill_vid(struct net_device *netdev,
719 __always_unused __be16 proto, u16 vid)
721 struct i40evf_adapter *adapter = netdev_priv(netdev);
723 i40evf_del_vlan(adapter, vid);
728 * i40evf_find_filter - Search filter list for specific mac filter
729 * @adapter: board private structure
730 * @macaddr: the MAC address
732 * Returns ptr to the filter object or NULL
735 i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter,
738 struct i40evf_mac_filter *f;
743 list_for_each_entry(f, &adapter->mac_filter_list, list) {
744 if (ether_addr_equal(macaddr, f->macaddr))
751 * i40e_add_filter - Add a mac filter to the filter list
752 * @adapter: board private structure
753 * @macaddr: the MAC address
755 * Returns ptr to the filter object or NULL when no memory available.
758 i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter,
761 struct i40evf_mac_filter *f;
766 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
767 &adapter->crit_section))
770 f = i40evf_find_filter(adapter, macaddr);
772 f = kzalloc(sizeof(*f), GFP_ATOMIC);
774 dev_info(&adapter->pdev->dev,
775 "%s: no memory for new filter\n", __func__);
776 clear_bit(__I40EVF_IN_CRITICAL_TASK,
777 &adapter->crit_section);
781 memcpy(f->macaddr, macaddr, ETH_ALEN);
783 list_add(&f->list, &adapter->mac_filter_list);
785 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
788 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
793 * i40evf_set_mac - NDO callback to set port mac address
794 * @netdev: network interface device structure
795 * @p: pointer to an address structure
797 * Returns 0 on success, negative on failure
799 static int i40evf_set_mac(struct net_device *netdev, void *p)
801 struct i40evf_adapter *adapter = netdev_priv(netdev);
802 struct i40e_hw *hw = &adapter->hw;
803 struct i40evf_mac_filter *f;
804 struct sockaddr *addr = p;
806 if (!is_valid_ether_addr(addr->sa_data))
807 return -EADDRNOTAVAIL;
809 if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
812 f = i40evf_add_filter(adapter, addr->sa_data);
814 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
815 memcpy(netdev->dev_addr, adapter->hw.mac.addr,
819 return (f == NULL) ? -ENOMEM : 0;
823 * i40evf_set_rx_mode - NDO callback to set the netdev filters
824 * @netdev: network interface device structure
826 static void i40evf_set_rx_mode(struct net_device *netdev)
828 struct i40evf_adapter *adapter = netdev_priv(netdev);
829 struct i40evf_mac_filter *f, *ftmp;
830 struct netdev_hw_addr *uca;
831 struct netdev_hw_addr *mca;
833 /* add addr if not already in the filter list */
834 netdev_for_each_uc_addr(uca, netdev) {
835 i40evf_add_filter(adapter, uca->addr);
837 netdev_for_each_mc_addr(mca, netdev) {
838 i40evf_add_filter(adapter, mca->addr);
841 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
842 &adapter->crit_section))
844 /* remove filter if not in netdev list */
845 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
848 if (is_multicast_ether_addr(f->macaddr)) {
849 netdev_for_each_mc_addr(mca, netdev) {
850 if (ether_addr_equal(mca->addr, f->macaddr)) {
856 netdev_for_each_uc_addr(uca, netdev) {
857 if (ether_addr_equal(uca->addr, f->macaddr)) {
865 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
868 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
872 * i40evf_napi_enable_all - enable NAPI on all queue vectors
873 * @adapter: board private structure
875 static void i40evf_napi_enable_all(struct i40evf_adapter *adapter)
878 struct i40e_q_vector *q_vector;
879 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
881 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
882 struct napi_struct *napi;
883 q_vector = adapter->q_vector[q_idx];
884 napi = &q_vector->napi;
890 * i40evf_napi_disable_all - disable NAPI on all queue vectors
891 * @adapter: board private structure
893 static void i40evf_napi_disable_all(struct i40evf_adapter *adapter)
896 struct i40e_q_vector *q_vector;
897 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
899 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
900 q_vector = adapter->q_vector[q_idx];
901 napi_disable(&q_vector->napi);
906 * i40evf_configure - set up transmit and receive data structures
907 * @adapter: board private structure
909 static void i40evf_configure(struct i40evf_adapter *adapter)
911 struct net_device *netdev = adapter->netdev;
914 i40evf_set_rx_mode(netdev);
916 i40evf_configure_tx(adapter);
917 i40evf_configure_rx(adapter);
918 adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
920 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
921 struct i40e_ring *ring = adapter->rx_rings[i];
922 i40evf_alloc_rx_buffers(ring, ring->count);
923 ring->next_to_use = ring->count - 1;
924 writel(ring->next_to_use, ring->tail);
929 * i40evf_up_complete - Finish the last steps of bringing up a connection
930 * @adapter: board private structure
932 static int i40evf_up_complete(struct i40evf_adapter *adapter)
934 adapter->state = __I40EVF_RUNNING;
935 clear_bit(__I40E_DOWN, &adapter->vsi.state);
937 i40evf_napi_enable_all(adapter);
939 adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES;
940 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
945 * i40evf_clean_all_rx_rings - Free Rx Buffers for all queues
946 * @adapter: board private structure
948 static void i40evf_clean_all_rx_rings(struct i40evf_adapter *adapter)
952 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
953 i40evf_clean_rx_ring(adapter->rx_rings[i]);
957 * i40evf_clean_all_tx_rings - Free Tx Buffers for all queues
958 * @adapter: board private structure
960 static void i40evf_clean_all_tx_rings(struct i40evf_adapter *adapter)
964 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
965 i40evf_clean_tx_ring(adapter->tx_rings[i]);
969 * i40e_down - Shutdown the connection processing
970 * @adapter: board private structure
972 void i40evf_down(struct i40evf_adapter *adapter)
974 struct net_device *netdev = adapter->netdev;
975 struct i40evf_mac_filter *f;
977 /* remove all MAC filters */
978 list_for_each_entry(f, &adapter->mac_filter_list, list) {
981 /* remove all VLAN filters */
982 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
985 if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) &&
986 adapter->state != __I40EVF_RESETTING) {
987 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
988 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
989 /* disable receives */
990 adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES;
991 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
994 netif_tx_disable(netdev);
996 netif_tx_stop_all_queues(netdev);
998 i40evf_irq_disable(adapter);
1000 i40evf_napi_disable_all(adapter);
1002 netif_carrier_off(netdev);
1004 i40evf_clean_all_tx_rings(adapter);
1005 i40evf_clean_all_rx_rings(adapter);
1009 * i40evf_acquire_msix_vectors - Setup the MSIX capability
1010 * @adapter: board private structure
1011 * @vectors: number of vectors to request
1013 * Work with the OS to set up the MSIX vectors needed.
1015 * Returns 0 on success, negative on failure
1018 i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors)
1020 int err, vector_threshold;
1022 /* We'll want at least 3 (vector_threshold):
1023 * 0) Other (Admin Queue and link, mostly)
1027 vector_threshold = MIN_MSIX_COUNT;
1029 /* The more we get, the more we will assign to Tx/Rx Cleanup
1030 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1031 * Right now, we simply care about how many we'll get; we'll
1032 * set them up later while requesting irq's.
1034 err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
1035 vector_threshold, vectors);
1037 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts.\n");
1038 kfree(adapter->msix_entries);
1039 adapter->msix_entries = NULL;
1043 /* Adjust for only the vectors we'll use, which is minimum
1044 * of max_msix_q_vectors + NONQ_VECS, or the number of
1045 * vectors we were allocated.
1047 adapter->num_msix_vectors = err;
1052 * i40evf_free_queues - Free memory for all rings
1053 * @adapter: board private structure to initialize
1055 * Free all of the memory associated with queue pairs.
1057 static void i40evf_free_queues(struct i40evf_adapter *adapter)
1061 if (!adapter->vsi_res)
1063 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1064 if (adapter->tx_rings[i])
1065 kfree_rcu(adapter->tx_rings[i], rcu);
1066 adapter->tx_rings[i] = NULL;
1067 adapter->rx_rings[i] = NULL;
1072 * i40evf_alloc_queues - Allocate memory for all rings
1073 * @adapter: board private structure to initialize
1075 * We allocate one ring per queue at run-time since we don't know the
1076 * number of queues at compile-time. The polling_netdev array is
1077 * intended for Multiqueue, but should work fine with a single queue.
1079 static int i40evf_alloc_queues(struct i40evf_adapter *adapter)
1083 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1084 struct i40e_ring *tx_ring;
1085 struct i40e_ring *rx_ring;
1087 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
1091 tx_ring->queue_index = i;
1092 tx_ring->netdev = adapter->netdev;
1093 tx_ring->dev = &adapter->pdev->dev;
1094 tx_ring->count = I40EVF_DEFAULT_TXD;
1095 adapter->tx_rings[i] = tx_ring;
1097 rx_ring = &tx_ring[1];
1098 rx_ring->queue_index = i;
1099 rx_ring->netdev = adapter->netdev;
1100 rx_ring->dev = &adapter->pdev->dev;
1101 rx_ring->count = I40EVF_DEFAULT_RXD;
1102 adapter->rx_rings[i] = rx_ring;
1108 i40evf_free_queues(adapter);
1113 * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported
1114 * @adapter: board private structure to initialize
1116 * Attempt to configure the interrupts using the best available
1117 * capabilities of the hardware and the kernel.
1119 static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter)
1121 int vector, v_budget;
1125 if (!adapter->vsi_res) {
1129 pairs = adapter->vsi_res->num_queue_pairs;
1131 /* It's easy to be greedy for MSI-X vectors, but it really
1132 * doesn't do us much good if we have a lot more vectors
1133 * than CPU's. So let's be conservative and only ask for
1134 * (roughly) twice the number of vectors as there are CPU's.
1136 v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS;
1137 v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors);
1139 /* A failure in MSI-X entry allocation isn't fatal, but it does
1140 * mean we disable MSI-X capabilities of the adapter.
1142 adapter->msix_entries = kcalloc(v_budget,
1143 sizeof(struct msix_entry), GFP_KERNEL);
1144 if (!adapter->msix_entries) {
1149 for (vector = 0; vector < v_budget; vector++)
1150 adapter->msix_entries[vector].entry = vector;
1152 i40evf_acquire_msix_vectors(adapter, v_budget);
1155 adapter->netdev->real_num_tx_queues = pairs;
1160 * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors
1161 * @adapter: board private structure to initialize
1163 * We allocate one q_vector per queue interrupt. If allocation fails we
1166 static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter)
1168 int q_idx, num_q_vectors;
1169 struct i40e_q_vector *q_vector;
1171 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
1173 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1174 q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
1177 q_vector->adapter = adapter;
1178 q_vector->vsi = &adapter->vsi;
1179 q_vector->v_idx = q_idx;
1180 netif_napi_add(adapter->netdev, &q_vector->napi,
1181 i40evf_napi_poll, 64);
1182 adapter->q_vector[q_idx] = q_vector;
1190 q_vector = adapter->q_vector[q_idx];
1191 netif_napi_del(&q_vector->napi);
1193 adapter->q_vector[q_idx] = NULL;
1199 * i40evf_free_q_vectors - Free memory allocated for interrupt vectors
1200 * @adapter: board private structure to initialize
1202 * This function frees the memory allocated to the q_vectors. In addition if
1203 * NAPI is enabled it will delete any references to the NAPI struct prior
1204 * to freeing the q_vector.
1206 static void i40evf_free_q_vectors(struct i40evf_adapter *adapter)
1208 int q_idx, num_q_vectors;
1211 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
1212 napi_vectors = adapter->vsi_res->num_queue_pairs;
1214 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1215 struct i40e_q_vector *q_vector = adapter->q_vector[q_idx];
1217 adapter->q_vector[q_idx] = NULL;
1218 if (q_idx < napi_vectors)
1219 netif_napi_del(&q_vector->napi);
1225 * i40evf_reset_interrupt_capability - Reset MSIX setup
1226 * @adapter: board private structure
1229 void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter)
1231 pci_disable_msix(adapter->pdev);
1232 kfree(adapter->msix_entries);
1233 adapter->msix_entries = NULL;
1237 * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init
1238 * @adapter: board private structure to initialize
1241 int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter)
1245 err = i40evf_set_interrupt_capability(adapter);
1247 dev_err(&adapter->pdev->dev,
1248 "Unable to setup interrupt capabilities\n");
1249 goto err_set_interrupt;
1252 err = i40evf_alloc_q_vectors(adapter);
1254 dev_err(&adapter->pdev->dev,
1255 "Unable to allocate memory for queue vectors\n");
1256 goto err_alloc_q_vectors;
1259 err = i40evf_alloc_queues(adapter);
1261 dev_err(&adapter->pdev->dev,
1262 "Unable to allocate memory for queues\n");
1263 goto err_alloc_queues;
1266 dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u",
1267 (adapter->vsi_res->num_queue_pairs > 1) ? "Enabled" :
1268 "Disabled", adapter->vsi_res->num_queue_pairs);
1272 i40evf_free_q_vectors(adapter);
1273 err_alloc_q_vectors:
1274 i40evf_reset_interrupt_capability(adapter);
1280 * i40evf_watchdog_timer - Periodic call-back timer
1281 * @data: pointer to adapter disguised as unsigned long
1283 static void i40evf_watchdog_timer(unsigned long data)
1285 struct i40evf_adapter *adapter = (struct i40evf_adapter *)data;
1286 schedule_work(&adapter->watchdog_task);
1287 /* timer will be rescheduled in watchdog task */
1291 * i40evf_watchdog_task - Periodic call-back task
1292 * @work: pointer to work_struct
1294 static void i40evf_watchdog_task(struct work_struct *work)
1296 struct i40evf_adapter *adapter = container_of(work,
1297 struct i40evf_adapter,
1299 struct i40e_hw *hw = &adapter->hw;
1301 if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section))
1302 goto restart_watchdog;
1304 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
1305 if ((rd32(hw, I40E_VFGEN_RSTAT) & 0x3) == I40E_VFR_VFACTIVE) {
1306 /* A chance for redemption! */
1307 dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n");
1308 adapter->state = __I40EVF_STARTUP;
1309 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
1310 schedule_delayed_work(&adapter->init_task, 10);
1311 clear_bit(__I40EVF_IN_CRITICAL_TASK,
1312 &adapter->crit_section);
1313 /* Don't reschedule the watchdog, since we've restarted
1314 * the init task. When init_task contacts the PF and
1315 * gets everything set up again, it'll restart the
1316 * watchdog for us. Down, boy. Sit. Stay. Woof.
1320 adapter->aq_pending = 0;
1321 adapter->aq_required = 0;
1322 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
1326 if ((adapter->state < __I40EVF_DOWN) ||
1327 (adapter->flags & I40EVF_FLAG_RESET_PENDING))
1330 /* check for reset */
1331 if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) &&
1332 (rd32(hw, I40E_VFGEN_RSTAT) & 0x3) != I40E_VFR_VFACTIVE) {
1333 adapter->state = __I40EVF_RESETTING;
1334 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
1335 dev_err(&adapter->pdev->dev, "Hardware reset detected.\n");
1336 dev_info(&adapter->pdev->dev, "Scheduling reset task\n");
1337 schedule_work(&adapter->reset_task);
1338 adapter->aq_pending = 0;
1339 adapter->aq_required = 0;
1340 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
1344 /* Process admin queue tasks. After init, everything gets done
1345 * here so we don't race on the admin queue.
1347 if (adapter->aq_pending)
1350 if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) {
1351 i40evf_map_queues(adapter);
1355 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) {
1356 i40evf_add_ether_addrs(adapter);
1360 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) {
1361 i40evf_add_vlans(adapter);
1365 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) {
1366 i40evf_del_ether_addrs(adapter);
1370 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) {
1371 i40evf_del_vlans(adapter);
1375 if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) {
1376 i40evf_disable_queues(adapter);
1380 if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) {
1381 i40evf_configure_queues(adapter);
1385 if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) {
1386 i40evf_enable_queues(adapter);
1390 if (adapter->state == __I40EVF_RUNNING)
1391 i40evf_request_stats(adapter);
1393 i40evf_irq_enable(adapter, true);
1394 i40evf_fire_sw_int(adapter, 0xFF);
1397 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1399 if (adapter->aq_required)
1400 mod_timer(&adapter->watchdog_timer,
1401 jiffies + msecs_to_jiffies(20));
1403 mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2));
1404 schedule_work(&adapter->adminq_task);
1408 * i40evf_configure_rss - increment to next available tx queue
1409 * @adapter: board private structure
1412 * Helper function for RSS programming to increment through available
1413 * queus. Returns the next queue value.
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 j = next_queue(adapter, j);
1456 j = next_queue(adapter, j);
1458 j = next_queue(adapter, j);
1460 j = next_queue(adapter, j);
1462 wr32(hw, I40E_VFQF_HLUT(i), lut);
1467 #define I40EVF_RESET_WAIT_MS 100
1468 #define I40EVF_RESET_WAIT_COUNT 200
1470 * i40evf_reset_task - Call-back task to handle hardware reset
1471 * @work: pointer to work_struct
1473 * During reset we need to shut down and reinitialize the admin queue
1474 * before we can use it to communicate with the PF again. We also clear
1475 * and reinit the rings because that context is lost as well.
1477 static void i40evf_reset_task(struct work_struct *work)
1479 struct i40evf_adapter *adapter = container_of(work,
1480 struct i40evf_adapter,
1482 struct i40e_hw *hw = &adapter->hw;
1486 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
1487 &adapter->crit_section))
1490 if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) {
1491 dev_info(&adapter->pdev->dev, "Requesting reset from PF\n");
1492 i40evf_request_reset(adapter);
1495 /* poll until we see the reset actually happen */
1496 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
1497 rstat_val = rd32(hw, I40E_VFGEN_RSTAT) &
1498 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1499 if (rstat_val != I40E_VFR_VFACTIVE) {
1500 dev_info(&adapter->pdev->dev, "Reset now occurring\n");
1503 msleep(I40EVF_RESET_WAIT_MS);
1506 if (i == I40EVF_RESET_WAIT_COUNT) {
1507 dev_err(&adapter->pdev->dev, "Reset was not detected\n");
1508 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1509 goto continue_reset; /* act like the reset happened */
1512 /* wait until the reset is complete and the PF is responding to us */
1513 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
1514 rstat_val = rd32(hw, I40E_VFGEN_RSTAT) &
1515 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1516 if (rstat_val == I40E_VFR_VFACTIVE) {
1517 dev_info(&adapter->pdev->dev, "Reset is complete. Reinitializing.\n");
1520 msleep(I40EVF_RESET_WAIT_MS);
1523 if (i == I40EVF_RESET_WAIT_COUNT) {
1524 /* reset never finished */
1525 dev_err(&adapter->pdev->dev, "Reset never finished (%x). PF driver is dead, and so am I.\n",
1527 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
1529 if (netif_running(adapter->netdev)) {
1530 set_bit(__I40E_DOWN, &adapter->vsi.state);
1531 i40evf_down(adapter);
1532 i40evf_free_traffic_irqs(adapter);
1533 i40evf_free_all_tx_resources(adapter);
1534 i40evf_free_all_rx_resources(adapter);
1536 i40evf_free_misc_irq(adapter);
1537 i40evf_reset_interrupt_capability(adapter);
1538 i40evf_free_queues(adapter);
1539 kfree(adapter->vf_res);
1540 i40evf_shutdown_adminq(hw);
1541 adapter->netdev->flags &= ~IFF_UP;
1542 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1543 return; /* Do not attempt to reinit. It's dead, Jim. */
1547 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1549 i40evf_down(adapter);
1550 adapter->state = __I40EVF_RESETTING;
1552 /* kill and reinit the admin queue */
1553 if (i40evf_shutdown_adminq(hw))
1554 dev_warn(&adapter->pdev->dev,
1555 "%s: Failed to destroy the Admin Queue resources\n",
1557 err = i40evf_init_adminq(hw);
1559 dev_info(&adapter->pdev->dev, "%s: init_adminq failed: %d\n",
1562 adapter->aq_pending = 0;
1563 adapter->aq_required = 0;
1564 i40evf_map_queues(adapter);
1565 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1567 mod_timer(&adapter->watchdog_timer, jiffies + 2);
1569 if (netif_running(adapter->netdev)) {
1570 /* allocate transmit descriptors */
1571 err = i40evf_setup_all_tx_resources(adapter);
1575 /* allocate receive descriptors */
1576 err = i40evf_setup_all_rx_resources(adapter);
1580 i40evf_configure(adapter);
1582 err = i40evf_up_complete(adapter);
1586 i40evf_irq_enable(adapter, true);
1590 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit.\n");
1591 i40evf_close(adapter->netdev);
1595 * i40evf_adminq_task - worker thread to clean the admin queue
1596 * @work: pointer to work_struct containing our data
1598 static void i40evf_adminq_task(struct work_struct *work)
1600 struct i40evf_adapter *adapter =
1601 container_of(work, struct i40evf_adapter, adminq_task);
1602 struct i40e_hw *hw = &adapter->hw;
1603 struct i40e_arq_event_info event;
1604 struct i40e_virtchnl_msg *v_msg;
1608 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
1611 event.msg_size = I40EVF_MAX_AQ_BUF_SIZE;
1612 event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
1613 if (!event.msg_buf) {
1614 dev_info(&adapter->pdev->dev, "%s: no memory for ARQ clean\n",
1618 v_msg = (struct i40e_virtchnl_msg *)&event.desc;
1620 ret = i40evf_clean_arq_element(hw, &event, &pending);
1622 break; /* No event to process or error cleaning ARQ */
1624 i40evf_virtchnl_completion(adapter, v_msg->v_opcode,
1625 v_msg->v_retval, event.msg_buf,
1628 dev_info(&adapter->pdev->dev,
1629 "%s: ARQ: Pending events %d\n",
1631 memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE);
1635 /* re-enable Admin queue interrupt cause */
1636 i40evf_misc_irq_enable(adapter);
1638 kfree(event.msg_buf);
1642 * i40evf_free_all_tx_resources - Free Tx Resources for All Queues
1643 * @adapter: board private structure
1645 * Free all transmit software resources
1647 static void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter)
1651 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
1652 if (adapter->tx_rings[i]->desc)
1653 i40evf_free_tx_resources(adapter->tx_rings[i]);
1658 * i40evf_setup_all_tx_resources - allocate all queues Tx resources
1659 * @adapter: board private structure
1661 * If this function returns with an error, then it's possible one or
1662 * more of the rings is populated (while the rest are not). It is the
1663 * callers duty to clean those orphaned rings.
1665 * Return 0 on success, negative on failure
1667 static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter)
1671 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1672 err = i40evf_setup_tx_descriptors(adapter->tx_rings[i]);
1675 dev_err(&adapter->pdev->dev,
1676 "%s: Allocation for Tx Queue %u failed\n",
1685 * i40evf_setup_all_rx_resources - allocate all queues Rx resources
1686 * @adapter: board private structure
1688 * If this function returns with an error, then it's possible one or
1689 * more of the rings is populated (while the rest are not). It is the
1690 * callers duty to clean those orphaned rings.
1692 * Return 0 on success, negative on failure
1694 static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter)
1698 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1699 err = i40evf_setup_rx_descriptors(adapter->rx_rings[i]);
1702 dev_err(&adapter->pdev->dev,
1703 "%s: Allocation for Rx Queue %u failed\n",
1711 * i40evf_free_all_rx_resources - Free Rx Resources for All Queues
1712 * @adapter: board private structure
1714 * Free all receive software resources
1716 static void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter)
1720 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
1721 if (adapter->rx_rings[i]->desc)
1722 i40evf_free_rx_resources(adapter->rx_rings[i]);
1726 * i40evf_open - Called when a network interface is made active
1727 * @netdev: network interface device structure
1729 * Returns 0 on success, negative value on failure
1731 * The open entry point is called when a network interface is made
1732 * active by the system (IFF_UP). At this point all resources needed
1733 * for transmit and receive operations are allocated, the interrupt
1734 * handler is registered with the OS, the watchdog timer is started,
1735 * and the stack is notified that the interface is ready.
1737 static int i40evf_open(struct net_device *netdev)
1739 struct i40evf_adapter *adapter = netdev_priv(netdev);
1742 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
1743 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n");
1746 if (adapter->state != __I40EVF_DOWN)
1749 /* allocate transmit descriptors */
1750 err = i40evf_setup_all_tx_resources(adapter);
1754 /* allocate receive descriptors */
1755 err = i40evf_setup_all_rx_resources(adapter);
1759 /* clear any pending interrupts, may auto mask */
1760 err = i40evf_request_traffic_irqs(adapter, netdev->name);
1764 i40evf_configure(adapter);
1766 err = i40evf_up_complete(adapter);
1770 i40evf_irq_enable(adapter, true);
1775 i40evf_down(adapter);
1776 i40evf_free_traffic_irqs(adapter);
1778 i40evf_free_all_rx_resources(adapter);
1780 i40evf_free_all_tx_resources(adapter);
1786 * i40evf_close - Disables a network interface
1787 * @netdev: network interface device structure
1789 * Returns 0, this is not allowed to fail
1791 * The close entry point is called when an interface is de-activated
1792 * by the OS. The hardware is still under the drivers control, but
1793 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue)
1794 * are freed, along with all transmit and receive resources.
1796 static int i40evf_close(struct net_device *netdev)
1798 struct i40evf_adapter *adapter = netdev_priv(netdev);
1800 if (adapter->state <= __I40EVF_DOWN)
1803 /* signal that we are down to the interrupt handler */
1804 adapter->state = __I40EVF_DOWN;
1806 set_bit(__I40E_DOWN, &adapter->vsi.state);
1808 i40evf_down(adapter);
1809 i40evf_free_traffic_irqs(adapter);
1811 i40evf_free_all_tx_resources(adapter);
1812 i40evf_free_all_rx_resources(adapter);
1818 * i40evf_get_stats - Get System Network Statistics
1819 * @netdev: network interface device structure
1821 * Returns the address of the device statistics structure.
1822 * The statistics are actually updated from the timer callback.
1824 static struct net_device_stats *i40evf_get_stats(struct net_device *netdev)
1826 struct i40evf_adapter *adapter = netdev_priv(netdev);
1828 /* only return the current stats */
1829 return &adapter->net_stats;
1833 * i40evf_reinit_locked - Software reinit
1834 * @adapter: board private structure
1836 * Reinititalizes the ring structures in response to a software configuration
1837 * change. Roughly the same as close followed by open, but skips releasing
1838 * and reallocating the interrupts.
1840 void i40evf_reinit_locked(struct i40evf_adapter *adapter)
1842 struct net_device *netdev = adapter->netdev;
1845 WARN_ON(in_interrupt());
1847 adapter->state = __I40EVF_RESETTING;
1849 i40evf_down(adapter);
1851 /* allocate transmit descriptors */
1852 err = i40evf_setup_all_tx_resources(adapter);
1856 /* allocate receive descriptors */
1857 err = i40evf_setup_all_rx_resources(adapter);
1861 i40evf_configure(adapter);
1863 err = i40evf_up_complete(adapter);
1867 i40evf_irq_enable(adapter, true);
1871 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit.\n");
1872 i40evf_close(netdev);
1876 * i40evf_change_mtu - Change the Maximum Transfer Unit
1877 * @netdev: network interface device structure
1878 * @new_mtu: new value for maximum frame size
1880 * Returns 0 on success, negative on failure
1882 static int i40evf_change_mtu(struct net_device *netdev, int new_mtu)
1884 struct i40evf_adapter *adapter = netdev_priv(netdev);
1885 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
1887 if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1890 /* must set new MTU before calling down or up */
1891 netdev->mtu = new_mtu;
1892 i40evf_reinit_locked(adapter);
1896 static const struct net_device_ops i40evf_netdev_ops = {
1897 .ndo_open = i40evf_open,
1898 .ndo_stop = i40evf_close,
1899 .ndo_start_xmit = i40evf_xmit_frame,
1900 .ndo_get_stats = i40evf_get_stats,
1901 .ndo_set_rx_mode = i40evf_set_rx_mode,
1902 .ndo_validate_addr = eth_validate_addr,
1903 .ndo_set_mac_address = i40evf_set_mac,
1904 .ndo_change_mtu = i40evf_change_mtu,
1905 .ndo_tx_timeout = i40evf_tx_timeout,
1906 .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid,
1907 .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid,
1911 * i40evf_check_reset_complete - check that VF reset is complete
1912 * @hw: pointer to hw struct
1914 * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
1916 static int i40evf_check_reset_complete(struct i40e_hw *hw)
1921 for (i = 0; i < 100; i++) {
1922 rstat = rd32(hw, I40E_VFGEN_RSTAT);
1923 if (rstat == I40E_VFR_VFACTIVE)
1931 * i40evf_init_task - worker thread to perform delayed initialization
1932 * @work: pointer to work_struct containing our data
1934 * This task completes the work that was begun in probe. Due to the nature
1935 * of VF-PF communications, we may need to wait tens of milliseconds to get
1936 * reponses back from the PF. Rather than busy-wait in probe and bog down the
1937 * whole system, we'll do it in a task so we can sleep.
1938 * This task only runs during driver init. Once we've established
1939 * communications with the PF driver and set up our netdev, the watchdog
1942 static void i40evf_init_task(struct work_struct *work)
1944 struct i40evf_adapter *adapter = container_of(work,
1945 struct i40evf_adapter,
1947 struct net_device *netdev = adapter->netdev;
1948 struct i40evf_mac_filter *f;
1949 struct i40e_hw *hw = &adapter->hw;
1950 struct pci_dev *pdev = adapter->pdev;
1953 switch (adapter->state) {
1954 case __I40EVF_STARTUP:
1955 /* driver loaded, probe complete */
1956 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
1957 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1958 err = i40e_set_mac_type(hw);
1960 dev_err(&pdev->dev, "Failed to set MAC type (%d)\n",
1964 err = i40evf_check_reset_complete(hw);
1966 dev_err(&pdev->dev, "Device is still in reset (%d)\n",
1970 hw->aq.num_arq_entries = I40EVF_AQ_LEN;
1971 hw->aq.num_asq_entries = I40EVF_AQ_LEN;
1972 hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
1973 hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
1975 err = i40evf_init_adminq(hw);
1977 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n",
1981 err = i40evf_send_api_ver(adapter);
1983 dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err);
1984 i40evf_shutdown_adminq(hw);
1987 adapter->state = __I40EVF_INIT_VERSION_CHECK;
1990 case __I40EVF_INIT_VERSION_CHECK:
1991 if (!i40evf_asq_done(hw)) {
1992 dev_err(&pdev->dev, "Admin queue command never completed.\n");
1996 /* aq msg sent, awaiting reply */
1997 err = i40evf_verify_api_ver(adapter);
1999 dev_err(&pdev->dev, "Unable to verify API version (%d)\n",
2003 err = i40evf_send_vf_config_msg(adapter);
2005 dev_err(&pdev->dev, "Unable send config request (%d)\n",
2009 adapter->state = __I40EVF_INIT_GET_RESOURCES;
2012 case __I40EVF_INIT_GET_RESOURCES:
2013 /* aq msg sent, awaiting reply */
2014 if (!adapter->vf_res) {
2015 bufsz = sizeof(struct i40e_virtchnl_vf_resource) +
2017 sizeof(struct i40e_virtchnl_vsi_resource));
2018 adapter->vf_res = kzalloc(bufsz, GFP_KERNEL);
2019 if (!adapter->vf_res)
2022 err = i40evf_get_vf_config(adapter);
2023 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK)
2026 dev_err(&pdev->dev, "Unable to get VF config (%d)\n",
2030 adapter->state = __I40EVF_INIT_SW;
2035 /* got VF config message back from PF, now we can parse it */
2036 for (i = 0; i < adapter->vf_res->num_vsis; i++) {
2037 if (adapter->vf_res->vsi_res[i].vsi_type == I40E_VSI_SRIOV)
2038 adapter->vsi_res = &adapter->vf_res->vsi_res[i];
2040 if (!adapter->vsi_res) {
2041 dev_err(&pdev->dev, "No LAN VSI found\n");
2045 adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED;
2047 netdev->netdev_ops = &i40evf_netdev_ops;
2048 i40evf_set_ethtool_ops(netdev);
2049 netdev->watchdog_timeo = 5 * HZ;
2050 netdev->features |= NETIF_F_HIGHDMA |
2060 if (adapter->vf_res->vf_offload_flags
2061 & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) {
2062 netdev->vlan_features = netdev->features;
2063 netdev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2064 NETIF_F_HW_VLAN_CTAG_RX |
2065 NETIF_F_HW_VLAN_CTAG_FILTER;
2068 /* copy netdev features into list of user selectable features */
2069 netdev->hw_features |= netdev->features;
2070 netdev->hw_features &= ~NETIF_F_RXCSUM;
2072 if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
2073 dev_info(&pdev->dev, "Invalid MAC address %pMAC, using random\n",
2074 adapter->hw.mac.addr);
2075 random_ether_addr(adapter->hw.mac.addr);
2077 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
2078 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
2080 INIT_LIST_HEAD(&adapter->mac_filter_list);
2081 INIT_LIST_HEAD(&adapter->vlan_filter_list);
2082 f = kzalloc(sizeof(*f), GFP_ATOMIC);
2086 memcpy(f->macaddr, adapter->hw.mac.addr, ETH_ALEN);
2088 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
2090 list_add(&f->list, &adapter->mac_filter_list);
2092 init_timer(&adapter->watchdog_timer);
2093 adapter->watchdog_timer.function = &i40evf_watchdog_timer;
2094 adapter->watchdog_timer.data = (unsigned long)adapter;
2095 mod_timer(&adapter->watchdog_timer, jiffies + 1);
2097 err = i40evf_init_interrupt_scheme(adapter);
2100 i40evf_map_rings_to_vectors(adapter);
2101 i40evf_configure_rss(adapter);
2102 err = i40evf_request_misc_irq(adapter);
2106 netif_carrier_off(netdev);
2108 adapter->vsi.id = adapter->vsi_res->vsi_id;
2109 adapter->vsi.seid = adapter->vsi_res->vsi_id; /* dummy */
2110 adapter->vsi.back = adapter;
2111 adapter->vsi.base_vector = 1;
2112 adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK;
2113 adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC |
2114 ITR_REG_TO_USEC(I40E_ITR_RX_DEF));
2115 adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC |
2116 ITR_REG_TO_USEC(I40E_ITR_TX_DEF));
2117 adapter->vsi.netdev = adapter->netdev;
2119 if (!adapter->netdev_registered) {
2120 err = register_netdev(netdev);
2125 adapter->netdev_registered = true;
2127 netif_tx_stop_all_queues(netdev);
2129 dev_info(&pdev->dev, "MAC address: %pMAC\n", adapter->hw.mac.addr);
2130 if (netdev->features & NETIF_F_GRO)
2131 dev_info(&pdev->dev, "GRO is enabled\n");
2133 dev_info(&pdev->dev, "%s\n", i40evf_driver_string);
2134 adapter->state = __I40EVF_DOWN;
2135 set_bit(__I40E_DOWN, &adapter->vsi.state);
2136 i40evf_misc_irq_enable(adapter);
2139 schedule_delayed_work(&adapter->init_task,
2140 msecs_to_jiffies(50));
2144 i40evf_free_misc_irq(adapter);
2146 i40evf_reset_interrupt_capability(adapter);
2148 kfree(adapter->vf_res);
2149 adapter->vf_res = NULL;
2151 /* Things went into the weeds, so try again later */
2152 if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) {
2153 dev_err(&pdev->dev, "Failed to communicate with PF; giving up.\n");
2154 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
2155 return; /* do not reschedule */
2157 schedule_delayed_work(&adapter->init_task, HZ * 3);
2161 * i40evf_shutdown - Shutdown the device in preparation for a reboot
2162 * @pdev: pci device structure
2164 static void i40evf_shutdown(struct pci_dev *pdev)
2166 struct net_device *netdev = pci_get_drvdata(pdev);
2168 netif_device_detach(netdev);
2170 if (netif_running(netdev))
2171 i40evf_close(netdev);
2174 pci_save_state(pdev);
2177 pci_disable_device(pdev);
2181 * i40evf_probe - Device Initialization Routine
2182 * @pdev: PCI device information struct
2183 * @ent: entry in i40evf_pci_tbl
2185 * Returns 0 on success, negative on failure
2187 * i40evf_probe initializes an adapter identified by a pci_dev structure.
2188 * The OS initialization, configuring of the adapter private structure,
2189 * and a hardware reset occur.
2191 static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2193 struct net_device *netdev;
2194 struct i40evf_adapter *adapter = NULL;
2195 struct i40e_hw *hw = NULL;
2198 err = pci_enable_device(pdev);
2202 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
2204 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
2207 "DMA configuration failed: 0x%x\n", err);
2212 err = pci_request_regions(pdev, i40evf_driver_name);
2215 "pci_request_regions failed 0x%x\n", err);
2219 pci_enable_pcie_error_reporting(pdev);
2221 pci_set_master(pdev);
2223 netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter),
2227 goto err_alloc_etherdev;
2230 SET_NETDEV_DEV(netdev, &pdev->dev);
2232 pci_set_drvdata(pdev, netdev);
2233 adapter = netdev_priv(netdev);
2235 adapter->netdev = netdev;
2236 adapter->pdev = pdev;
2241 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
2242 adapter->state = __I40EVF_STARTUP;
2244 /* Call save state here because it relies on the adapter struct. */
2245 pci_save_state(pdev);
2247 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
2248 pci_resource_len(pdev, 0));
2253 hw->vendor_id = pdev->vendor;
2254 hw->device_id = pdev->device;
2255 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
2256 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2257 hw->subsystem_device_id = pdev->subsystem_device;
2258 hw->bus.device = PCI_SLOT(pdev->devfn);
2259 hw->bus.func = PCI_FUNC(pdev->devfn);
2261 INIT_WORK(&adapter->reset_task, i40evf_reset_task);
2262 INIT_WORK(&adapter->adminq_task, i40evf_adminq_task);
2263 INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task);
2264 INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task);
2265 schedule_delayed_work(&adapter->init_task, 10);
2270 free_netdev(netdev);
2272 pci_release_regions(pdev);
2275 pci_disable_device(pdev);
2281 * i40evf_suspend - Power management suspend routine
2282 * @pdev: PCI device information struct
2285 * Called when the system (VM) is entering sleep/suspend.
2287 static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state)
2289 struct net_device *netdev = pci_get_drvdata(pdev);
2290 struct i40evf_adapter *adapter = netdev_priv(netdev);
2293 netif_device_detach(netdev);
2295 if (netif_running(netdev)) {
2297 i40evf_down(adapter);
2300 i40evf_free_misc_irq(adapter);
2301 i40evf_reset_interrupt_capability(adapter);
2303 retval = pci_save_state(pdev);
2307 pci_disable_device(pdev);
2313 * i40evf_resume - Power managment resume routine
2314 * @pdev: PCI device information struct
2316 * Called when the system (VM) is resumed from sleep/suspend.
2318 static int i40evf_resume(struct pci_dev *pdev)
2320 struct i40evf_adapter *adapter = pci_get_drvdata(pdev);
2321 struct net_device *netdev = adapter->netdev;
2324 pci_set_power_state(pdev, PCI_D0);
2325 pci_restore_state(pdev);
2326 /* pci_restore_state clears dev->state_saved so call
2327 * pci_save_state to restore it.
2329 pci_save_state(pdev);
2331 err = pci_enable_device_mem(pdev);
2333 dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n");
2336 pci_set_master(pdev);
2339 err = i40evf_set_interrupt_capability(adapter);
2341 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n");
2344 err = i40evf_request_misc_irq(adapter);
2347 dev_err(&pdev->dev, "Cannot get interrupt vector.\n");
2351 schedule_work(&adapter->reset_task);
2353 netif_device_attach(netdev);
2358 #endif /* CONFIG_PM */
2360 * i40evf_remove - Device Removal Routine
2361 * @pdev: PCI device information struct
2363 * i40evf_remove is called by the PCI subsystem to alert the driver
2364 * that it should release a PCI device. The could be caused by a
2365 * Hot-Plug event, or because the driver is going to be removed from
2368 static void i40evf_remove(struct pci_dev *pdev)
2370 struct net_device *netdev = pci_get_drvdata(pdev);
2371 struct i40evf_adapter *adapter = netdev_priv(netdev);
2372 struct i40e_hw *hw = &adapter->hw;
2374 cancel_delayed_work_sync(&adapter->init_task);
2375 cancel_work_sync(&adapter->reset_task);
2377 if (adapter->netdev_registered) {
2378 unregister_netdev(netdev);
2379 adapter->netdev_registered = false;
2381 adapter->state = __I40EVF_REMOVE;
2383 if (adapter->msix_entries) {
2384 i40evf_misc_irq_disable(adapter);
2385 i40evf_free_misc_irq(adapter);
2386 i40evf_reset_interrupt_capability(adapter);
2389 del_timer_sync(&adapter->watchdog_timer);
2390 flush_scheduled_work();
2392 if (hw->aq.asq.count)
2393 i40evf_shutdown_adminq(hw);
2395 iounmap(hw->hw_addr);
2396 pci_release_regions(pdev);
2398 i40evf_free_queues(adapter);
2399 kfree(adapter->vf_res);
2401 free_netdev(netdev);
2403 pci_disable_pcie_error_reporting(pdev);
2405 pci_disable_device(pdev);
2408 static struct pci_driver i40evf_driver = {
2409 .name = i40evf_driver_name,
2410 .id_table = i40evf_pci_tbl,
2411 .probe = i40evf_probe,
2412 .remove = i40evf_remove,
2414 .suspend = i40evf_suspend,
2415 .resume = i40evf_resume,
2417 .shutdown = i40evf_shutdown,
2421 * i40e_init_module - Driver Registration Routine
2423 * i40e_init_module is the first routine called when the driver is
2424 * loaded. All it does is register with the PCI subsystem.
2426 static int __init i40evf_init_module(void)
2429 pr_info("i40evf: %s - version %s\n", i40evf_driver_string,
2430 i40evf_driver_version);
2432 pr_info("%s\n", i40evf_copyright);
2434 ret = pci_register_driver(&i40evf_driver);
2438 module_init(i40evf_init_module);
2441 * i40e_exit_module - Driver Exit Cleanup Routine
2443 * i40e_exit_module is called just before the driver is removed
2446 static void __exit i40evf_exit_module(void)
2448 pci_unregister_driver(&i40evf_driver);
2451 module_exit(i40evf_exit_module);