| /******************************************************************************* |
| * |
| * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver |
| * Copyright(c) 2013 - 2016 Intel Corporation. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| * The full GNU General Public License is included in this distribution in |
| * the file called "COPYING". |
| * |
| * Contact Information: |
| * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| ******************************************************************************/ |
| |
| #include "i40evf.h" |
| #include "i40e_prototype.h" |
| static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter); |
| static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter); |
| static int i40evf_close(struct net_device *netdev); |
| |
| char i40evf_driver_name[] = "i40evf"; |
| static const char i40evf_driver_string[] = |
| "Intel(R) 40-10 Gigabit Virtual Function Network Driver"; |
| |
| #define DRV_KERN "-k" |
| |
| #define DRV_VERSION_MAJOR 1 |
| #define DRV_VERSION_MINOR 5 |
| #define DRV_VERSION_BUILD 10 |
| #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \ |
| __stringify(DRV_VERSION_MINOR) "." \ |
| __stringify(DRV_VERSION_BUILD) \ |
| DRV_KERN |
| const char i40evf_driver_version[] = DRV_VERSION; |
| static const char i40evf_copyright[] = |
| "Copyright (c) 2013 - 2015 Intel Corporation."; |
| |
| /* i40evf_pci_tbl - PCI Device ID Table |
| * |
| * Wildcard entries (PCI_ANY_ID) should come last |
| * Last entry must be all 0s |
| * |
| * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, |
| * Class, Class Mask, private data (not used) } |
| */ |
| static const struct pci_device_id i40evf_pci_tbl[] = { |
| {PCI_VDEVICE(INTEL, I40E_DEV_ID_VF), 0}, |
| {PCI_VDEVICE(INTEL, I40E_DEV_ID_X722_VF), 0}, |
| /* required last entry */ |
| {0, } |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, i40evf_pci_tbl); |
| |
| MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
| MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(DRV_VERSION); |
| |
| static struct workqueue_struct *i40evf_wq; |
| |
| /** |
| * i40evf_allocate_dma_mem_d - OS specific memory alloc for shared code |
| * @hw: pointer to the HW structure |
| * @mem: ptr to mem struct to fill out |
| * @size: size of memory requested |
| * @alignment: what to align the allocation to |
| **/ |
| i40e_status i40evf_allocate_dma_mem_d(struct i40e_hw *hw, |
| struct i40e_dma_mem *mem, |
| u64 size, u32 alignment) |
| { |
| struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back; |
| |
| if (!mem) |
| return I40E_ERR_PARAM; |
| |
| mem->size = ALIGN(size, alignment); |
| mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size, |
| (dma_addr_t *)&mem->pa, GFP_KERNEL); |
| if (mem->va) |
| return 0; |
| else |
| return I40E_ERR_NO_MEMORY; |
| } |
| |
| /** |
| * i40evf_free_dma_mem_d - OS specific memory free for shared code |
| * @hw: pointer to the HW structure |
| * @mem: ptr to mem struct to free |
| **/ |
| i40e_status i40evf_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem) |
| { |
| struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back; |
| |
| if (!mem || !mem->va) |
| return I40E_ERR_PARAM; |
| dma_free_coherent(&adapter->pdev->dev, mem->size, |
| mem->va, (dma_addr_t)mem->pa); |
| return 0; |
| } |
| |
| /** |
| * i40evf_allocate_virt_mem_d - OS specific memory alloc for shared code |
| * @hw: pointer to the HW structure |
| * @mem: ptr to mem struct to fill out |
| * @size: size of memory requested |
| **/ |
| i40e_status i40evf_allocate_virt_mem_d(struct i40e_hw *hw, |
| struct i40e_virt_mem *mem, u32 size) |
| { |
| if (!mem) |
| return I40E_ERR_PARAM; |
| |
| mem->size = size; |
| mem->va = kzalloc(size, GFP_KERNEL); |
| |
| if (mem->va) |
| return 0; |
| else |
| return I40E_ERR_NO_MEMORY; |
| } |
| |
| /** |
| * i40evf_free_virt_mem_d - OS specific memory free for shared code |
| * @hw: pointer to the HW structure |
| * @mem: ptr to mem struct to free |
| **/ |
| i40e_status i40evf_free_virt_mem_d(struct i40e_hw *hw, |
| struct i40e_virt_mem *mem) |
| { |
| if (!mem) |
| return I40E_ERR_PARAM; |
| |
| /* it's ok to kfree a NULL pointer */ |
| kfree(mem->va); |
| |
| return 0; |
| } |
| |
| /** |
| * i40evf_debug_d - OS dependent version of debug printing |
| * @hw: pointer to the HW structure |
| * @mask: debug level mask |
| * @fmt_str: printf-type format description |
| **/ |
| void i40evf_debug_d(void *hw, u32 mask, char *fmt_str, ...) |
| { |
| char buf[512]; |
| va_list argptr; |
| |
| if (!(mask & ((struct i40e_hw *)hw)->debug_mask)) |
| return; |
| |
| va_start(argptr, fmt_str); |
| vsnprintf(buf, sizeof(buf), fmt_str, argptr); |
| va_end(argptr); |
| |
| /* the debug string is already formatted with a newline */ |
| pr_info("%s", buf); |
| } |
| |
| /** |
| * i40evf_schedule_reset - Set the flags and schedule a reset event |
| * @adapter: board private structure |
| **/ |
| void i40evf_schedule_reset(struct i40evf_adapter *adapter) |
| { |
| if (!(adapter->flags & |
| (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED))) { |
| adapter->flags |= I40EVF_FLAG_RESET_NEEDED; |
| schedule_work(&adapter->reset_task); |
| } |
| } |
| |
| /** |
| * i40evf_tx_timeout - Respond to a Tx Hang |
| * @netdev: network interface device structure |
| **/ |
| static void i40evf_tx_timeout(struct net_device *netdev) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| |
| adapter->tx_timeout_count++; |
| i40evf_schedule_reset(adapter); |
| } |
| |
| /** |
| * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC |
| * @adapter: board private structure |
| **/ |
| static void i40evf_misc_irq_disable(struct i40evf_adapter *adapter) |
| { |
| struct i40e_hw *hw = &adapter->hw; |
| |
| wr32(hw, I40E_VFINT_DYN_CTL01, 0); |
| |
| /* read flush */ |
| rd32(hw, I40E_VFGEN_RSTAT); |
| |
| synchronize_irq(adapter->msix_entries[0].vector); |
| } |
| |
| /** |
| * i40evf_misc_irq_enable - Enable default interrupt generation settings |
| * @adapter: board private structure |
| **/ |
| static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter) |
| { |
| struct i40e_hw *hw = &adapter->hw; |
| |
| wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK | |
| I40E_VFINT_DYN_CTL01_ITR_INDX_MASK); |
| wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA1_ADMINQ_MASK); |
| |
| /* read flush */ |
| rd32(hw, I40E_VFGEN_RSTAT); |
| } |
| |
| /** |
| * i40evf_irq_disable - Mask off interrupt generation on the NIC |
| * @adapter: board private structure |
| **/ |
| static void i40evf_irq_disable(struct i40evf_adapter *adapter) |
| { |
| int i; |
| struct i40e_hw *hw = &adapter->hw; |
| |
| if (!adapter->msix_entries) |
| return; |
| |
| for (i = 1; i < adapter->num_msix_vectors; i++) { |
| wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), 0); |
| synchronize_irq(adapter->msix_entries[i].vector); |
| } |
| /* read flush */ |
| rd32(hw, I40E_VFGEN_RSTAT); |
| } |
| |
| /** |
| * i40evf_irq_enable_queues - Enable interrupt for specified queues |
| * @adapter: board private structure |
| * @mask: bitmap of queues to enable |
| **/ |
| void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask) |
| { |
| struct i40e_hw *hw = &adapter->hw; |
| int i; |
| |
| for (i = 1; i < adapter->num_msix_vectors; i++) { |
| if (mask & BIT(i - 1)) { |
| wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), |
| I40E_VFINT_DYN_CTLN1_INTENA_MASK | |
| I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | |
| I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK); |
| } |
| } |
| } |
| |
| /** |
| * i40evf_fire_sw_int - Generate SW interrupt for specified vectors |
| * @adapter: board private structure |
| * @mask: bitmap of vectors to trigger |
| **/ |
| static void i40evf_fire_sw_int(struct i40evf_adapter *adapter, u32 mask) |
| { |
| struct i40e_hw *hw = &adapter->hw; |
| int i; |
| u32 dyn_ctl; |
| |
| if (mask & 1) { |
| dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTL01); |
| dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK | |
| I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | |
| I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK; |
| wr32(hw, I40E_VFINT_DYN_CTL01, dyn_ctl); |
| } |
| for (i = 1; i < adapter->num_msix_vectors; i++) { |
| if (mask & BIT(i)) { |
| dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1)); |
| dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK | |
| I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | |
| I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK; |
| wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl); |
| } |
| } |
| } |
| |
| /** |
| * i40evf_irq_enable - Enable default interrupt generation settings |
| * @adapter: board private structure |
| * @flush: boolean value whether to run rd32() |
| **/ |
| void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush) |
| { |
| struct i40e_hw *hw = &adapter->hw; |
| |
| i40evf_misc_irq_enable(adapter); |
| i40evf_irq_enable_queues(adapter, ~0); |
| |
| if (flush) |
| rd32(hw, I40E_VFGEN_RSTAT); |
| } |
| |
| /** |
| * i40evf_msix_aq - Interrupt handler for vector 0 |
| * @irq: interrupt number |
| * @data: pointer to netdev |
| **/ |
| static irqreturn_t i40evf_msix_aq(int irq, void *data) |
| { |
| struct net_device *netdev = data; |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| struct i40e_hw *hw = &adapter->hw; |
| u32 val; |
| |
| /* handle non-queue interrupts, these reads clear the registers */ |
| val = rd32(hw, I40E_VFINT_ICR01); |
| val = rd32(hw, I40E_VFINT_ICR0_ENA1); |
| |
| val = rd32(hw, I40E_VFINT_DYN_CTL01) | |
| I40E_VFINT_DYN_CTL01_CLEARPBA_MASK; |
| wr32(hw, I40E_VFINT_DYN_CTL01, val); |
| |
| /* schedule work on the private workqueue */ |
| schedule_work(&adapter->adminq_task); |
| |
| return IRQ_HANDLED; |
| } |
| |
| /** |
| * i40evf_msix_clean_rings - MSIX mode Interrupt Handler |
| * @irq: interrupt number |
| * @data: pointer to a q_vector |
| **/ |
| static irqreturn_t i40evf_msix_clean_rings(int irq, void *data) |
| { |
| struct i40e_q_vector *q_vector = data; |
| |
| if (!q_vector->tx.ring && !q_vector->rx.ring) |
| return IRQ_HANDLED; |
| |
| napi_schedule_irqoff(&q_vector->napi); |
| |
| return IRQ_HANDLED; |
| } |
| |
| /** |
| * i40evf_map_vector_to_rxq - associate irqs with rx queues |
| * @adapter: board private structure |
| * @v_idx: interrupt number |
| * @r_idx: queue number |
| **/ |
| static void |
| i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx) |
| { |
| struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx]; |
| struct i40e_ring *rx_ring = &adapter->rx_rings[r_idx]; |
| |
| rx_ring->q_vector = q_vector; |
| rx_ring->next = q_vector->rx.ring; |
| rx_ring->vsi = &adapter->vsi; |
| q_vector->rx.ring = rx_ring; |
| q_vector->rx.count++; |
| q_vector->rx.latency_range = I40E_LOW_LATENCY; |
| q_vector->itr_countdown = ITR_COUNTDOWN_START; |
| } |
| |
| /** |
| * i40evf_map_vector_to_txq - associate irqs with tx queues |
| * @adapter: board private structure |
| * @v_idx: interrupt number |
| * @t_idx: queue number |
| **/ |
| static void |
| i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx) |
| { |
| struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx]; |
| struct i40e_ring *tx_ring = &adapter->tx_rings[t_idx]; |
| |
| tx_ring->q_vector = q_vector; |
| tx_ring->next = q_vector->tx.ring; |
| tx_ring->vsi = &adapter->vsi; |
| q_vector->tx.ring = tx_ring; |
| q_vector->tx.count++; |
| q_vector->tx.latency_range = I40E_LOW_LATENCY; |
| q_vector->itr_countdown = ITR_COUNTDOWN_START; |
| q_vector->num_ringpairs++; |
| q_vector->ring_mask |= BIT(t_idx); |
| } |
| |
| /** |
| * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors |
| * @adapter: board private structure to initialize |
| * |
| * This function maps descriptor rings to the queue-specific vectors |
| * we were allotted through the MSI-X enabling code. Ideally, we'd have |
| * one vector per ring/queue, but on a constrained vector budget, we |
| * group the rings as "efficiently" as possible. You would add new |
| * mapping configurations in here. |
| **/ |
| static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter) |
| { |
| int q_vectors; |
| int v_start = 0; |
| int rxr_idx = 0, txr_idx = 0; |
| int rxr_remaining = adapter->num_active_queues; |
| int txr_remaining = adapter->num_active_queues; |
| int i, j; |
| int rqpv, tqpv; |
| int err = 0; |
| |
| q_vectors = adapter->num_msix_vectors - NONQ_VECS; |
| |
| /* The ideal configuration... |
| * We have enough vectors to map one per queue. |
| */ |
| if (q_vectors >= (rxr_remaining * 2)) { |
| for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) |
| i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx); |
| |
| for (; txr_idx < txr_remaining; v_start++, txr_idx++) |
| i40evf_map_vector_to_txq(adapter, v_start, txr_idx); |
| goto out; |
| } |
| |
| /* If we don't have enough vectors for a 1-to-1 |
| * mapping, we'll have to group them so there are |
| * multiple queues per vector. |
| * Re-adjusting *qpv takes care of the remainder. |
| */ |
| for (i = v_start; i < q_vectors; i++) { |
| rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i); |
| for (j = 0; j < rqpv; j++) { |
| i40evf_map_vector_to_rxq(adapter, i, rxr_idx); |
| rxr_idx++; |
| rxr_remaining--; |
| } |
| } |
| for (i = v_start; i < q_vectors; i++) { |
| tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i); |
| for (j = 0; j < tqpv; j++) { |
| i40evf_map_vector_to_txq(adapter, i, txr_idx); |
| txr_idx++; |
| txr_remaining--; |
| } |
| } |
| |
| out: |
| adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS; |
| |
| return err; |
| } |
| |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| /** |
| * i40evf_netpoll - A Polling 'interrupt' handler |
| * @netdev: network interface device structure |
| * |
| * This is used by netconsole to send skbs without having to re-enable |
| * interrupts. It's not called while the normal interrupt routine is executing. |
| **/ |
| static void i40evf_netpoll(struct net_device *netdev) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| int q_vectors = adapter->num_msix_vectors - NONQ_VECS; |
| int i; |
| |
| /* if interface is down do nothing */ |
| if (test_bit(__I40E_DOWN, &adapter->vsi.state)) |
| return; |
| |
| for (i = 0; i < q_vectors; i++) |
| i40evf_msix_clean_rings(0, &adapter->q_vectors[i]); |
| } |
| |
| #endif |
| /** |
| * i40evf_request_traffic_irqs - Initialize MSI-X interrupts |
| * @adapter: board private structure |
| * |
| * Allocates MSI-X vectors for tx and rx handling, and requests |
| * interrupts from the kernel. |
| **/ |
| static int |
| i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename) |
| { |
| int vector, err, q_vectors; |
| int rx_int_idx = 0, tx_int_idx = 0; |
| |
| i40evf_irq_disable(adapter); |
| /* Decrement for Other and TCP Timer vectors */ |
| q_vectors = adapter->num_msix_vectors - NONQ_VECS; |
| |
| for (vector = 0; vector < q_vectors; vector++) { |
| struct i40e_q_vector *q_vector = &adapter->q_vectors[vector]; |
| |
| if (q_vector->tx.ring && q_vector->rx.ring) { |
| snprintf(q_vector->name, sizeof(q_vector->name) - 1, |
| "i40evf-%s-%s-%d", basename, |
| "TxRx", rx_int_idx++); |
| tx_int_idx++; |
| } else if (q_vector->rx.ring) { |
| snprintf(q_vector->name, sizeof(q_vector->name) - 1, |
| "i40evf-%s-%s-%d", basename, |
| "rx", rx_int_idx++); |
| } else if (q_vector->tx.ring) { |
| snprintf(q_vector->name, sizeof(q_vector->name) - 1, |
| "i40evf-%s-%s-%d", basename, |
| "tx", tx_int_idx++); |
| } else { |
| /* skip this unused q_vector */ |
| continue; |
| } |
| err = request_irq( |
| adapter->msix_entries[vector + NONQ_VECS].vector, |
| i40evf_msix_clean_rings, |
| 0, |
| q_vector->name, |
| q_vector); |
| if (err) { |
| dev_info(&adapter->pdev->dev, |
| "Request_irq failed, error: %d\n", err); |
| goto free_queue_irqs; |
| } |
| /* assign the mask for this irq */ |
| irq_set_affinity_hint( |
| adapter->msix_entries[vector + NONQ_VECS].vector, |
| q_vector->affinity_mask); |
| } |
| |
| return 0; |
| |
| free_queue_irqs: |
| while (vector) { |
| vector--; |
| irq_set_affinity_hint( |
| adapter->msix_entries[vector + NONQ_VECS].vector, |
| NULL); |
| free_irq(adapter->msix_entries[vector + NONQ_VECS].vector, |
| &adapter->q_vectors[vector]); |
| } |
| return err; |
| } |
| |
| /** |
| * i40evf_request_misc_irq - Initialize MSI-X interrupts |
| * @adapter: board private structure |
| * |
| * Allocates MSI-X vector 0 and requests interrupts from the kernel. This |
| * vector is only for the admin queue, and stays active even when the netdev |
| * is closed. |
| **/ |
| static int i40evf_request_misc_irq(struct i40evf_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| int err; |
| |
| snprintf(adapter->misc_vector_name, |
| sizeof(adapter->misc_vector_name) - 1, "i40evf-%s:mbx", |
| dev_name(&adapter->pdev->dev)); |
| err = request_irq(adapter->msix_entries[0].vector, |
| &i40evf_msix_aq, 0, |
| adapter->misc_vector_name, netdev); |
| if (err) { |
| dev_err(&adapter->pdev->dev, |
| "request_irq for %s failed: %d\n", |
| adapter->misc_vector_name, err); |
| free_irq(adapter->msix_entries[0].vector, netdev); |
| } |
| return err; |
| } |
| |
| /** |
| * i40evf_free_traffic_irqs - Free MSI-X interrupts |
| * @adapter: board private structure |
| * |
| * Frees all MSI-X vectors other than 0. |
| **/ |
| static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter) |
| { |
| int i; |
| int q_vectors; |
| |
| q_vectors = adapter->num_msix_vectors - NONQ_VECS; |
| |
| for (i = 0; i < q_vectors; i++) { |
| irq_set_affinity_hint(adapter->msix_entries[i+1].vector, |
| NULL); |
| free_irq(adapter->msix_entries[i+1].vector, |
| &adapter->q_vectors[i]); |
| } |
| } |
| |
| /** |
| * i40evf_free_misc_irq - Free MSI-X miscellaneous vector |
| * @adapter: board private structure |
| * |
| * Frees MSI-X vector 0. |
| **/ |
| static void i40evf_free_misc_irq(struct i40evf_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| |
| free_irq(adapter->msix_entries[0].vector, netdev); |
| } |
| |
| /** |
| * i40evf_configure_tx - Configure Transmit Unit after Reset |
| * @adapter: board private structure |
| * |
| * Configure the Tx unit of the MAC after a reset. |
| **/ |
| static void i40evf_configure_tx(struct i40evf_adapter *adapter) |
| { |
| struct i40e_hw *hw = &adapter->hw; |
| int i; |
| |
| for (i = 0; i < adapter->num_active_queues; i++) |
| adapter->tx_rings[i].tail = hw->hw_addr + I40E_QTX_TAIL1(i); |
| } |
| |
| /** |
| * i40evf_configure_rx - Configure Receive Unit after Reset |
| * @adapter: board private structure |
| * |
| * Configure the Rx unit of the MAC after a reset. |
| **/ |
| static void i40evf_configure_rx(struct i40evf_adapter *adapter) |
| { |
| struct i40e_hw *hw = &adapter->hw; |
| int i; |
| |
| for (i = 0; i < adapter->num_active_queues; i++) { |
| adapter->rx_rings[i].tail = hw->hw_addr + I40E_QRX_TAIL1(i); |
| adapter->rx_rings[i].rx_buf_len = I40EVF_RXBUFFER_2048; |
| } |
| } |
| |
| /** |
| * i40evf_find_vlan - Search filter list for specific vlan filter |
| * @adapter: board private structure |
| * @vlan: vlan tag |
| * |
| * Returns ptr to the filter object or NULL |
| **/ |
| static struct |
| i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan) |
| { |
| struct i40evf_vlan_filter *f; |
| |
| list_for_each_entry(f, &adapter->vlan_filter_list, list) { |
| if (vlan == f->vlan) |
| return f; |
| } |
| return NULL; |
| } |
| |
| /** |
| * i40evf_add_vlan - Add a vlan filter to the list |
| * @adapter: board private structure |
| * @vlan: VLAN tag |
| * |
| * Returns ptr to the filter object or NULL when no memory available. |
| **/ |
| static struct |
| i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan) |
| { |
| struct i40evf_vlan_filter *f = NULL; |
| int count = 50; |
| |
| while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, |
| &adapter->crit_section)) { |
| udelay(1); |
| if (--count == 0) |
| goto out; |
| } |
| |
| f = i40evf_find_vlan(adapter, vlan); |
| if (!f) { |
| f = kzalloc(sizeof(*f), GFP_ATOMIC); |
| if (!f) |
| goto clearout; |
| |
| f->vlan = vlan; |
| |
| INIT_LIST_HEAD(&f->list); |
| list_add(&f->list, &adapter->vlan_filter_list); |
| f->add = true; |
| adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; |
| } |
| |
| clearout: |
| clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
| out: |
| return f; |
| } |
| |
| /** |
| * i40evf_del_vlan - Remove a vlan filter from the list |
| * @adapter: board private structure |
| * @vlan: VLAN tag |
| **/ |
| static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan) |
| { |
| struct i40evf_vlan_filter *f; |
| int count = 50; |
| |
| while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, |
| &adapter->crit_section)) { |
| udelay(1); |
| if (--count == 0) |
| return; |
| } |
| |
| f = i40evf_find_vlan(adapter, vlan); |
| if (f) { |
| f->remove = true; |
| adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; |
| } |
| clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
| } |
| |
| /** |
| * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device |
| * @netdev: network device struct |
| * @vid: VLAN tag |
| **/ |
| static int i40evf_vlan_rx_add_vid(struct net_device *netdev, |
| __always_unused __be16 proto, u16 vid) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| |
| if (!VLAN_ALLOWED(adapter)) |
| return -EIO; |
| if (i40evf_add_vlan(adapter, vid) == NULL) |
| return -ENOMEM; |
| return 0; |
| } |
| |
| /** |
| * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device |
| * @netdev: network device struct |
| * @vid: VLAN tag |
| **/ |
| static int i40evf_vlan_rx_kill_vid(struct net_device *netdev, |
| __always_unused __be16 proto, u16 vid) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| |
| if (VLAN_ALLOWED(adapter)) { |
| i40evf_del_vlan(adapter, vid); |
| return 0; |
| } |
| return -EIO; |
| } |
| |
| /** |
| * i40evf_find_filter - Search filter list for specific mac filter |
| * @adapter: board private structure |
| * @macaddr: the MAC address |
| * |
| * Returns ptr to the filter object or NULL |
| **/ |
| static struct |
| i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter, |
| u8 *macaddr) |
| { |
| struct i40evf_mac_filter *f; |
| |
| if (!macaddr) |
| return NULL; |
| |
| list_for_each_entry(f, &adapter->mac_filter_list, list) { |
| if (ether_addr_equal(macaddr, f->macaddr)) |
| return f; |
| } |
| return NULL; |
| } |
| |
| /** |
| * i40e_add_filter - Add a mac filter to the filter list |
| * @adapter: board private structure |
| * @macaddr: the MAC address |
| * |
| * Returns ptr to the filter object or NULL when no memory available. |
| **/ |
| static struct |
| i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter, |
| u8 *macaddr) |
| { |
| struct i40evf_mac_filter *f; |
| int count = 50; |
| |
| if (!macaddr) |
| return NULL; |
| |
| while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, |
| &adapter->crit_section)) { |
| udelay(1); |
| if (--count == 0) |
| return NULL; |
| } |
| |
| f = i40evf_find_filter(adapter, macaddr); |
| if (!f) { |
| f = kzalloc(sizeof(*f), GFP_ATOMIC); |
| if (!f) { |
| clear_bit(__I40EVF_IN_CRITICAL_TASK, |
| &adapter->crit_section); |
| return NULL; |
| } |
| |
| ether_addr_copy(f->macaddr, macaddr); |
| |
| list_add(&f->list, &adapter->mac_filter_list); |
| f->add = true; |
| adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; |
| } |
| |
| clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
| return f; |
| } |
| |
| /** |
| * i40evf_set_mac - NDO callback to set port mac address |
| * @netdev: network interface device structure |
| * @p: pointer to an address structure |
| * |
| * Returns 0 on success, negative on failure |
| **/ |
| static int i40evf_set_mac(struct net_device *netdev, void *p) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| struct i40e_hw *hw = &adapter->hw; |
| struct i40evf_mac_filter *f; |
| struct sockaddr *addr = p; |
| |
| if (!is_valid_ether_addr(addr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) |
| return 0; |
| |
| if (adapter->flags & I40EVF_FLAG_ADDR_SET_BY_PF) |
| return -EPERM; |
| |
| f = i40evf_find_filter(adapter, hw->mac.addr); |
| if (f) { |
| f->remove = true; |
| adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; |
| } |
| |
| f = i40evf_add_filter(adapter, addr->sa_data); |
| if (f) { |
| ether_addr_copy(hw->mac.addr, addr->sa_data); |
| ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); |
| } |
| |
| return (f == NULL) ? -ENOMEM : 0; |
| } |
| |
| /** |
| * i40evf_set_rx_mode - NDO callback to set the netdev filters |
| * @netdev: network interface device structure |
| **/ |
| static void i40evf_set_rx_mode(struct net_device *netdev) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| struct i40evf_mac_filter *f, *ftmp; |
| struct netdev_hw_addr *uca; |
| struct netdev_hw_addr *mca; |
| struct netdev_hw_addr *ha; |
| int count = 50; |
| |
| /* add addr if not already in the filter list */ |
| netdev_for_each_uc_addr(uca, netdev) { |
| i40evf_add_filter(adapter, uca->addr); |
| } |
| netdev_for_each_mc_addr(mca, netdev) { |
| i40evf_add_filter(adapter, mca->addr); |
| } |
| |
| while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, |
| &adapter->crit_section)) { |
| udelay(1); |
| if (--count == 0) { |
| dev_err(&adapter->pdev->dev, |
| "Failed to get lock in %s\n", __func__); |
| return; |
| } |
| } |
| /* remove filter if not in netdev list */ |
| list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { |
| netdev_for_each_mc_addr(mca, netdev) |
| if (ether_addr_equal(mca->addr, f->macaddr)) |
| goto bottom_of_search_loop; |
| |
| netdev_for_each_uc_addr(uca, netdev) |
| if (ether_addr_equal(uca->addr, f->macaddr)) |
| goto bottom_of_search_loop; |
| |
| for_each_dev_addr(netdev, ha) |
| if (ether_addr_equal(ha->addr, f->macaddr)) |
| goto bottom_of_search_loop; |
| |
| if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) |
| goto bottom_of_search_loop; |
| |
| /* f->macaddr wasn't found in uc, mc, or ha list so delete it */ |
| f->remove = true; |
| adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; |
| |
| bottom_of_search_loop: |
| continue; |
| } |
| |
| if (netdev->flags & IFF_PROMISC && |
| !(adapter->flags & I40EVF_FLAG_PROMISC_ON)) |
| adapter->aq_required |= I40EVF_FLAG_AQ_REQUEST_PROMISC; |
| else if (!(netdev->flags & IFF_PROMISC) && |
| adapter->flags & I40EVF_FLAG_PROMISC_ON) |
| adapter->aq_required |= I40EVF_FLAG_AQ_RELEASE_PROMISC; |
| |
| clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
| } |
| |
| /** |
| * i40evf_napi_enable_all - enable NAPI on all queue vectors |
| * @adapter: board private structure |
| **/ |
| static void i40evf_napi_enable_all(struct i40evf_adapter *adapter) |
| { |
| int q_idx; |
| struct i40e_q_vector *q_vector; |
| int q_vectors = adapter->num_msix_vectors - NONQ_VECS; |
| |
| for (q_idx = 0; q_idx < q_vectors; q_idx++) { |
| struct napi_struct *napi; |
| |
| q_vector = &adapter->q_vectors[q_idx]; |
| napi = &q_vector->napi; |
| napi_enable(napi); |
| } |
| } |
| |
| /** |
| * i40evf_napi_disable_all - disable NAPI on all queue vectors |
| * @adapter: board private structure |
| **/ |
| static void i40evf_napi_disable_all(struct i40evf_adapter *adapter) |
| { |
| int q_idx; |
| struct i40e_q_vector *q_vector; |
| int q_vectors = adapter->num_msix_vectors - NONQ_VECS; |
| |
| for (q_idx = 0; q_idx < q_vectors; q_idx++) { |
| q_vector = &adapter->q_vectors[q_idx]; |
| napi_disable(&q_vector->napi); |
| } |
| } |
| |
| /** |
| * i40evf_configure - set up transmit and receive data structures |
| * @adapter: board private structure |
| **/ |
| static void i40evf_configure(struct i40evf_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| int i; |
| |
| i40evf_set_rx_mode(netdev); |
| |
| i40evf_configure_tx(adapter); |
| i40evf_configure_rx(adapter); |
| adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES; |
| |
| for (i = 0; i < adapter->num_active_queues; i++) { |
| struct i40e_ring *ring = &adapter->rx_rings[i]; |
| |
| i40evf_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring)); |
| } |
| } |
| |
| /** |
| * i40evf_up_complete - Finish the last steps of bringing up a connection |
| * @adapter: board private structure |
| **/ |
| static int i40evf_up_complete(struct i40evf_adapter *adapter) |
| { |
| adapter->state = __I40EVF_RUNNING; |
| clear_bit(__I40E_DOWN, &adapter->vsi.state); |
| |
| i40evf_napi_enable_all(adapter); |
| |
| adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES; |
| mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); |
| return 0; |
| } |
| |
| /** |
| * i40e_down - Shutdown the connection processing |
| * @adapter: board private structure |
| **/ |
| void i40evf_down(struct i40evf_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| struct i40evf_mac_filter *f; |
| |
| if (adapter->state <= __I40EVF_DOWN_PENDING) |
| return; |
| |
| while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, |
| &adapter->crit_section)) |
| usleep_range(500, 1000); |
| |
| netif_carrier_off(netdev); |
| netif_tx_disable(netdev); |
| i40evf_napi_disable_all(adapter); |
| i40evf_irq_disable(adapter); |
| |
| /* remove all MAC filters */ |
| list_for_each_entry(f, &adapter->mac_filter_list, list) { |
| f->remove = true; |
| } |
| /* remove all VLAN filters */ |
| list_for_each_entry(f, &adapter->vlan_filter_list, list) { |
| f->remove = true; |
| } |
| if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) && |
| adapter->state != __I40EVF_RESETTING) { |
| /* cancel any current operation */ |
| adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; |
| /* Schedule operations to close down the HW. Don't wait |
| * here for this to complete. The watchdog is still running |
| * and it will take care of this. |
| */ |
| adapter->aq_required = I40EVF_FLAG_AQ_DEL_MAC_FILTER; |
| adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; |
| adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES; |
| } |
| |
| clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
| } |
| |
| /** |
| * i40evf_acquire_msix_vectors - Setup the MSIX capability |
| * @adapter: board private structure |
| * @vectors: number of vectors to request |
| * |
| * Work with the OS to set up the MSIX vectors needed. |
| * |
| * Returns 0 on success, negative on failure |
| **/ |
| static int |
| i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors) |
| { |
| int err, vector_threshold; |
| |
| /* We'll want at least 3 (vector_threshold): |
| * 0) Other (Admin Queue and link, mostly) |
| * 1) TxQ[0] Cleanup |
| * 2) RxQ[0] Cleanup |
| */ |
| vector_threshold = MIN_MSIX_COUNT; |
| |
| /* The more we get, the more we will assign to Tx/Rx Cleanup |
| * for the separate queues...where Rx Cleanup >= Tx Cleanup. |
| * Right now, we simply care about how many we'll get; we'll |
| * set them up later while requesting irq's. |
| */ |
| err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, |
| vector_threshold, vectors); |
| if (err < 0) { |
| dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n"); |
| kfree(adapter->msix_entries); |
| adapter->msix_entries = NULL; |
| return err; |
| } |
| |
| /* Adjust for only the vectors we'll use, which is minimum |
| * of max_msix_q_vectors + NONQ_VECS, or the number of |
| * vectors we were allocated. |
| */ |
| adapter->num_msix_vectors = err; |
| return 0; |
| } |
| |
| /** |
| * i40evf_free_queues - Free memory for all rings |
| * @adapter: board private structure to initialize |
| * |
| * Free all of the memory associated with queue pairs. |
| **/ |
| static void i40evf_free_queues(struct i40evf_adapter *adapter) |
| { |
| if (!adapter->vsi_res) |
| return; |
| kfree(adapter->tx_rings); |
| adapter->tx_rings = NULL; |
| kfree(adapter->rx_rings); |
| adapter->rx_rings = NULL; |
| } |
| |
| /** |
| * i40evf_alloc_queues - Allocate memory for all rings |
| * @adapter: board private structure to initialize |
| * |
| * We allocate one ring per queue at run-time since we don't know the |
| * number of queues at compile-time. The polling_netdev array is |
| * intended for Multiqueue, but should work fine with a single queue. |
| **/ |
| static int i40evf_alloc_queues(struct i40evf_adapter *adapter) |
| { |
| int i; |
| |
| adapter->tx_rings = kcalloc(adapter->num_active_queues, |
| sizeof(struct i40e_ring), GFP_KERNEL); |
| if (!adapter->tx_rings) |
| goto err_out; |
| adapter->rx_rings = kcalloc(adapter->num_active_queues, |
| sizeof(struct i40e_ring), GFP_KERNEL); |
| if (!adapter->rx_rings) |
| goto err_out; |
| |
| for (i = 0; i < adapter->num_active_queues; i++) { |
| struct i40e_ring *tx_ring; |
| struct i40e_ring *rx_ring; |
| |
| tx_ring = &adapter->tx_rings[i]; |
| |
| tx_ring->queue_index = i; |
| tx_ring->netdev = adapter->netdev; |
| tx_ring->dev = &adapter->pdev->dev; |
| tx_ring->count = adapter->tx_desc_count; |
| if (adapter->flags & I40E_FLAG_WB_ON_ITR_CAPABLE) |
| tx_ring->flags |= I40E_TXR_FLAGS_WB_ON_ITR; |
| |
| rx_ring = &adapter->rx_rings[i]; |
| rx_ring->queue_index = i; |
| rx_ring->netdev = adapter->netdev; |
| rx_ring->dev = &adapter->pdev->dev; |
| rx_ring->count = adapter->rx_desc_count; |
| } |
| |
| return 0; |
| |
| err_out: |
| i40evf_free_queues(adapter); |
| return -ENOMEM; |
| } |
| |
| /** |
| * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported |
| * @adapter: board private structure to initialize |
| * |
| * Attempt to configure the interrupts using the best available |
| * capabilities of the hardware and the kernel. |
| **/ |
| static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter) |
| { |
| int vector, v_budget; |
| int pairs = 0; |
| int err = 0; |
| |
| if (!adapter->vsi_res) { |
| err = -EIO; |
| goto out; |
| } |
| pairs = adapter->num_active_queues; |
| |
| /* It's easy to be greedy for MSI-X vectors, but it really |
| * doesn't do us much good if we have a lot more vectors |
| * than CPU's. So let's be conservative and only ask for |
| * (roughly) twice the number of vectors as there are CPU's. |
| */ |
| v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS; |
| v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors); |
| |
| adapter->msix_entries = kcalloc(v_budget, |
| sizeof(struct msix_entry), GFP_KERNEL); |
| if (!adapter->msix_entries) { |
| err = -ENOMEM; |
| goto out; |
| } |
| |
| for (vector = 0; vector < v_budget; vector++) |
| adapter->msix_entries[vector].entry = vector; |
| |
| err = i40evf_acquire_msix_vectors(adapter, v_budget); |
| |
| out: |
| netif_set_real_num_rx_queues(adapter->netdev, pairs); |
| netif_set_real_num_tx_queues(adapter->netdev, pairs); |
| return err; |
| } |
| |
| /** |
| * i40e_config_rss_aq - Configure RSS keys and lut by using AQ commands |
| * @adapter: board private structure |
| * |
| * Return 0 on success, negative on failure |
| **/ |
| static int i40evf_config_rss_aq(struct i40evf_adapter *adapter) |
| { |
| struct i40e_aqc_get_set_rss_key_data *rss_key = |
| (struct i40e_aqc_get_set_rss_key_data *)adapter->rss_key; |
| struct i40e_hw *hw = &adapter->hw; |
| int ret = 0; |
| |
| if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) { |
| /* bail because we already have a command pending */ |
| dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n", |
| adapter->current_op); |
| return -EBUSY; |
| } |
| |
| ret = i40evf_aq_set_rss_key(hw, adapter->vsi.id, rss_key); |
| if (ret) { |
| dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n", |
| i40evf_stat_str(hw, ret), |
| i40evf_aq_str(hw, hw->aq.asq_last_status)); |
| return ret; |
| |
| } |
| |
| ret = i40evf_aq_set_rss_lut(hw, adapter->vsi.id, false, |
| adapter->rss_lut, adapter->rss_lut_size); |
| if (ret) { |
| dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n", |
| i40evf_stat_str(hw, ret), |
| i40evf_aq_str(hw, hw->aq.asq_last_status)); |
| } |
| |
| return ret; |
| |
| } |
| |
| /** |
| * i40evf_config_rss_reg - Configure RSS keys and lut by writing registers |
| * @adapter: board private structure |
| * |
| * Returns 0 on success, negative on failure |
| **/ |
| static int i40evf_config_rss_reg(struct i40evf_adapter *adapter) |
| { |
| struct i40e_hw *hw = &adapter->hw; |
| u32 *dw; |
| u16 i; |
| |
| dw = (u32 *)adapter->rss_key; |
| for (i = 0; i <= adapter->rss_key_size / 4; i++) |
| wr32(hw, I40E_VFQF_HKEY(i), dw[i]); |
| |
| dw = (u32 *)adapter->rss_lut; |
| for (i = 0; i <= adapter->rss_lut_size / 4; i++) |
| wr32(hw, I40E_VFQF_HLUT(i), dw[i]); |
| |
| i40e_flush(hw); |
| |
| return 0; |
| } |
| |
| /** |
| * i40evf_config_rss - Configure RSS keys and lut |
| * @adapter: board private structure |
| * |
| * Returns 0 on success, negative on failure |
| **/ |
| int i40evf_config_rss(struct i40evf_adapter *adapter) |
| { |
| |
| if (RSS_PF(adapter)) { |
| adapter->aq_required |= I40EVF_FLAG_AQ_SET_RSS_LUT | |
| I40EVF_FLAG_AQ_SET_RSS_KEY; |
| return 0; |
| } else if (RSS_AQ(adapter)) { |
| return i40evf_config_rss_aq(adapter); |
| } else { |
| return i40evf_config_rss_reg(adapter); |
| } |
| } |
| |
| /** |
| * i40evf_fill_rss_lut - Fill the lut with default values |
| * @adapter: board private structure |
| **/ |
| static void i40evf_fill_rss_lut(struct i40evf_adapter *adapter) |
| { |
| u16 i; |
| |
| for (i = 0; i < adapter->rss_lut_size; i++) |
| adapter->rss_lut[i] = i % adapter->num_active_queues; |
| } |
| |
| /** |
| * i40evf_init_rss - Prepare for RSS |
| * @adapter: board private structure |
| * |
| * Return 0 on success, negative on failure |
| **/ |
| static int i40evf_init_rss(struct i40evf_adapter *adapter) |
| { |
| struct i40e_hw *hw = &adapter->hw; |
| int ret; |
| |
| if (!RSS_PF(adapter)) { |
| /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ |
| if (adapter->vf_res->vf_offload_flags & |
| I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2) |
| adapter->hena = I40E_DEFAULT_RSS_HENA_EXPANDED; |
| else |
| adapter->hena = I40E_DEFAULT_RSS_HENA; |
| |
| wr32(hw, I40E_VFQF_HENA(0), (u32)adapter->hena); |
| wr32(hw, I40E_VFQF_HENA(1), (u32)(adapter->hena >> 32)); |
| } |
| |
| i40evf_fill_rss_lut(adapter); |
| |
| netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size); |
| ret = i40evf_config_rss(adapter); |
| |
| return ret; |
| } |
| |
| /** |
| * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors |
| * @adapter: board private structure to initialize |
| * |
| * We allocate one q_vector per queue interrupt. If allocation fails we |
| * return -ENOMEM. |
| **/ |
| static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter) |
| { |
| int q_idx = 0, num_q_vectors; |
| struct i40e_q_vector *q_vector; |
| |
| num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; |
| adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector), |
| GFP_KERNEL); |
| if (!adapter->q_vectors) |
| return -ENOMEM; |
| |
| for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { |
| q_vector = &adapter->q_vectors[q_idx]; |
| q_vector->adapter = adapter; |
| q_vector->vsi = &adapter->vsi; |
| q_vector->v_idx = q_idx; |
| netif_napi_add(adapter->netdev, &q_vector->napi, |
| i40evf_napi_poll, NAPI_POLL_WEIGHT); |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * i40evf_free_q_vectors - Free memory allocated for interrupt vectors |
| * @adapter: board private structure to initialize |
| * |
| * This function frees the memory allocated to the q_vectors. In addition if |
| * NAPI is enabled it will delete any references to the NAPI struct prior |
| * to freeing the q_vector. |
| **/ |
| static void i40evf_free_q_vectors(struct i40evf_adapter *adapter) |
| { |
| int q_idx, num_q_vectors; |
| int napi_vectors; |
| |
| num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; |
| napi_vectors = adapter->num_active_queues; |
| |
| for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { |
| struct i40e_q_vector *q_vector = &adapter->q_vectors[q_idx]; |
| if (q_idx < napi_vectors) |
| netif_napi_del(&q_vector->napi); |
| } |
| kfree(adapter->q_vectors); |
| } |
| |
| /** |
| * i40evf_reset_interrupt_capability - Reset MSIX setup |
| * @adapter: board private structure |
| * |
| **/ |
| void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter) |
| { |
| pci_disable_msix(adapter->pdev); |
| kfree(adapter->msix_entries); |
| adapter->msix_entries = NULL; |
| } |
| |
| /** |
| * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init |
| * @adapter: board private structure to initialize |
| * |
| **/ |
| int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter) |
| { |
| int err; |
| |
| err = i40evf_set_interrupt_capability(adapter); |
| if (err) { |
| dev_err(&adapter->pdev->dev, |
| "Unable to setup interrupt capabilities\n"); |
| goto err_set_interrupt; |
| } |
| |
| err = i40evf_alloc_q_vectors(adapter); |
| if (err) { |
| dev_err(&adapter->pdev->dev, |
| "Unable to allocate memory for queue vectors\n"); |
| goto err_alloc_q_vectors; |
| } |
| |
| err = i40evf_alloc_queues(adapter); |
| if (err) { |
| dev_err(&adapter->pdev->dev, |
| "Unable to allocate memory for queues\n"); |
| goto err_alloc_queues; |
| } |
| |
| dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u", |
| (adapter->num_active_queues > 1) ? "Enabled" : "Disabled", |
| adapter->num_active_queues); |
| |
| return 0; |
| err_alloc_queues: |
| i40evf_free_q_vectors(adapter); |
| err_alloc_q_vectors: |
| i40evf_reset_interrupt_capability(adapter); |
| err_set_interrupt: |
| return err; |
| } |
| |
| /** |
| * i40evf_free_rss - Free memory used by RSS structs |
| * @adapter: board private structure |
| **/ |
| static void i40evf_free_rss(struct i40evf_adapter *adapter) |
| { |
| kfree(adapter->rss_key); |
| adapter->rss_key = NULL; |
| |
| kfree(adapter->rss_lut); |
| adapter->rss_lut = NULL; |
| } |
| |
| /** |
| * i40evf_watchdog_timer - Periodic call-back timer |
| * @data: pointer to adapter disguised as unsigned long |
| **/ |
| static void i40evf_watchdog_timer(unsigned long data) |
| { |
| struct i40evf_adapter *adapter = (struct i40evf_adapter *)data; |
| |
| schedule_work(&adapter->watchdog_task); |
| /* timer will be rescheduled in watchdog task */ |
| } |
| |
| /** |
| * i40evf_watchdog_task - Periodic call-back task |
| * @work: pointer to work_struct |
| **/ |
| static void i40evf_watchdog_task(struct work_struct *work) |
| { |
| struct i40evf_adapter *adapter = container_of(work, |
| struct i40evf_adapter, |
| watchdog_task); |
| struct i40e_hw *hw = &adapter->hw; |
| u32 reg_val; |
| |
| if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section)) |
| goto restart_watchdog; |
| |
| if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { |
| reg_val = rd32(hw, I40E_VFGEN_RSTAT) & |
| I40E_VFGEN_RSTAT_VFR_STATE_MASK; |
| if ((reg_val == I40E_VFR_VFACTIVE) || |
| (reg_val == I40E_VFR_COMPLETED)) { |
| /* A chance for redemption! */ |
| dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n"); |
| adapter->state = __I40EVF_STARTUP; |
| adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED; |
| schedule_delayed_work(&adapter->init_task, 10); |
| clear_bit(__I40EVF_IN_CRITICAL_TASK, |
| &adapter->crit_section); |
| /* Don't reschedule the watchdog, since we've restarted |
| * the init task. When init_task contacts the PF and |
| * gets everything set up again, it'll restart the |
| * watchdog for us. Down, boy. Sit. Stay. Woof. |
| */ |
| return; |
| } |
| adapter->aq_required = 0; |
| adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; |
| goto watchdog_done; |
| } |
| |
| if ((adapter->state < __I40EVF_DOWN) || |
| (adapter->flags & I40EVF_FLAG_RESET_PENDING)) |
| goto watchdog_done; |
| |
| /* check for reset */ |
| reg_val = rd32(hw, I40E_VF_ARQLEN1) & I40E_VF_ARQLEN1_ARQENABLE_MASK; |
| if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && !reg_val) { |
| adapter->state = __I40EVF_RESETTING; |
| adapter->flags |= I40EVF_FLAG_RESET_PENDING; |
| dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); |
| schedule_work(&adapter->reset_task); |
| adapter->aq_required = 0; |
| adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; |
| goto watchdog_done; |
| } |
| |
| /* Process admin queue tasks. After init, everything gets done |
| * here so we don't race on the admin queue. |
| */ |
| if (adapter->current_op) { |
| if (!i40evf_asq_done(hw)) { |
| dev_dbg(&adapter->pdev->dev, "Admin queue timeout\n"); |
| i40evf_send_api_ver(adapter); |
| } |
| goto watchdog_done; |
| } |
| if (adapter->aq_required & I40EVF_FLAG_AQ_GET_CONFIG) { |
| i40evf_send_vf_config_msg(adapter); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) { |
| i40evf_disable_queues(adapter); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) { |
| i40evf_map_queues(adapter); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) { |
| i40evf_add_ether_addrs(adapter); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) { |
| i40evf_add_vlans(adapter); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) { |
| i40evf_del_ether_addrs(adapter); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) { |
| i40evf_del_vlans(adapter); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) { |
| i40evf_configure_queues(adapter); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) { |
| i40evf_enable_queues(adapter); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_RSS) { |
| /* This message goes straight to the firmware, not the |
| * PF, so we don't have to set current_op as we will |
| * not get a response through the ARQ. |
| */ |
| i40evf_init_rss(adapter); |
| adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_RSS; |
| goto watchdog_done; |
| } |
| if (adapter->aq_required & I40EVF_FLAG_AQ_GET_HENA) { |
| i40evf_get_hena(adapter); |
| goto watchdog_done; |
| } |
| if (adapter->aq_required & I40EVF_FLAG_AQ_SET_HENA) { |
| i40evf_set_hena(adapter); |
| goto watchdog_done; |
| } |
| if (adapter->aq_required & I40EVF_FLAG_AQ_SET_RSS_KEY) { |
| i40evf_set_rss_key(adapter); |
| goto watchdog_done; |
| } |
| if (adapter->aq_required & I40EVF_FLAG_AQ_SET_RSS_LUT) { |
| i40evf_set_rss_lut(adapter); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_REQUEST_PROMISC) { |
| i40evf_set_promiscuous(adapter, I40E_FLAG_VF_UNICAST_PROMISC | |
| I40E_FLAG_VF_MULTICAST_PROMISC); |
| goto watchdog_done; |
| } |
| |
| if (adapter->aq_required & I40EVF_FLAG_AQ_RELEASE_PROMISC) { |
| i40evf_set_promiscuous(adapter, 0); |
| goto watchdog_done; |
| } |
| |
| if (adapter->state == __I40EVF_RUNNING) |
| i40evf_request_stats(adapter); |
| watchdog_done: |
| if (adapter->state == __I40EVF_RUNNING) { |
| i40evf_irq_enable_queues(adapter, ~0); |
| i40evf_fire_sw_int(adapter, 0xFF); |
| } else { |
| i40evf_fire_sw_int(adapter, 0x1); |
| } |
| |
| clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
| restart_watchdog: |
| if (adapter->state == __I40EVF_REMOVE) |
| return; |
| if (adapter->aq_required) |
| mod_timer(&adapter->watchdog_timer, |
| jiffies + msecs_to_jiffies(20)); |
| else |
| mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2)); |
| schedule_work(&adapter->adminq_task); |
| } |
| |
| #define I40EVF_RESET_WAIT_MS 10 |
| #define I40EVF_RESET_WAIT_COUNT 500 |
| /** |
| * i40evf_reset_task - Call-back task to handle hardware reset |
| * @work: pointer to work_struct |
| * |
| * During reset we need to shut down and reinitialize the admin queue |
| * before we can use it to communicate with the PF again. We also clear |
| * and reinit the rings because that context is lost as well. |
| **/ |
| static void i40evf_reset_task(struct work_struct *work) |
| { |
| struct i40evf_adapter *adapter = container_of(work, |
| struct i40evf_adapter, |
| reset_task); |
| struct net_device *netdev = adapter->netdev; |
| struct i40e_hw *hw = &adapter->hw; |
| struct i40evf_vlan_filter *vlf; |
| struct i40evf_mac_filter *f; |
| u32 reg_val; |
| int i = 0, err; |
| |
| while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, |
| &adapter->crit_section)) |
| usleep_range(500, 1000); |
| |
| i40evf_misc_irq_disable(adapter); |
| if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) { |
| adapter->flags &= ~I40EVF_FLAG_RESET_NEEDED; |
| /* Restart the AQ here. If we have been reset but didn't |
| * detect it, or if the PF had to reinit, our AQ will be hosed. |
| */ |
| i40evf_shutdown_adminq(hw); |
| i40evf_init_adminq(hw); |
| i40evf_request_reset(adapter); |
| } |
| adapter->flags |= I40EVF_FLAG_RESET_PENDING; |
| |
| /* poll until we see the reset actually happen */ |
| for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { |
| reg_val = rd32(hw, I40E_VF_ARQLEN1) & |
| I40E_VF_ARQLEN1_ARQENABLE_MASK; |
| if (!reg_val) |
| break; |
| usleep_range(5000, 10000); |
| } |
| if (i == I40EVF_RESET_WAIT_COUNT) { |
| dev_info(&adapter->pdev->dev, "Never saw reset\n"); |
| goto continue_reset; /* act like the reset happened */ |
| } |
| |
| /* wait until the reset is complete and the PF is responding to us */ |
| for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { |
| reg_val = rd32(hw, I40E_VFGEN_RSTAT) & |
| I40E_VFGEN_RSTAT_VFR_STATE_MASK; |
| if (reg_val == I40E_VFR_VFACTIVE) |
| break; |
| msleep(I40EVF_RESET_WAIT_MS); |
| } |
| pci_set_master(adapter->pdev); |
| /* extra wait to make sure minimum wait is met */ |
| msleep(I40EVF_RESET_WAIT_MS); |
| if (i == I40EVF_RESET_WAIT_COUNT) { |
| struct i40evf_mac_filter *ftmp; |
| struct i40evf_vlan_filter *fv, *fvtmp; |
| |
| /* reset never finished */ |
| dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n", |
| reg_val); |
| adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; |
| |
| if (netif_running(adapter->netdev)) { |
| set_bit(__I40E_DOWN, &adapter->vsi.state); |
| netif_carrier_off(netdev); |
| netif_tx_disable(netdev); |
| i40evf_napi_disable_all(adapter); |
| i40evf_irq_disable(adapter); |
| i40evf_free_traffic_irqs(adapter); |
| i40evf_free_all_tx_resources(adapter); |
| i40evf_free_all_rx_resources(adapter); |
| } |
| |
| /* Delete all of the filters, both MAC and VLAN. */ |
| list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, |
| list) { |
| list_del(&f->list); |
| kfree(f); |
| } |
| |
| list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, |
| list) { |
| list_del(&fv->list); |
| kfree(fv); |
| } |
| |
| i40evf_free_misc_irq(adapter); |
| i40evf_reset_interrupt_capability(adapter); |
| i40evf_free_queues(adapter); |
| i40evf_free_q_vectors(adapter); |
| kfree(adapter->vf_res); |
| i40evf_shutdown_adminq(hw); |
| adapter->netdev->flags &= ~IFF_UP; |
| clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
| adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; |
| adapter->state = __I40EVF_DOWN; |
| dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n"); |
| return; /* Do not attempt to reinit. It's dead, Jim. */ |
| } |
| |
| continue_reset: |
| if (netif_running(adapter->netdev)) { |
| netif_carrier_off(netdev); |
| netif_tx_stop_all_queues(netdev); |
| i40evf_napi_disable_all(adapter); |
| } |
| i40evf_irq_disable(adapter); |
| |
| adapter->state = __I40EVF_RESETTING; |
| adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; |
| |
| /* free the Tx/Rx rings and descriptors, might be better to just |
| * re-use them sometime in the future |
| */ |
| i40evf_free_all_rx_resources(adapter); |
| i40evf_free_all_tx_resources(adapter); |
| |
| /* kill and reinit the admin queue */ |
| if (i40evf_shutdown_adminq(hw)) |
| dev_warn(&adapter->pdev->dev, "Failed to shut down adminq\n"); |
| adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; |
| err = i40evf_init_adminq(hw); |
| if (err) |
| dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n", |
| err); |
| |
| adapter->aq_required = I40EVF_FLAG_AQ_GET_CONFIG; |
| adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS; |
| |
| /* re-add all MAC filters */ |
| list_for_each_entry(f, &adapter->mac_filter_list, list) { |
| f->add = true; |
| } |
| /* re-add all VLAN filters */ |
| list_for_each_entry(vlf, &adapter->vlan_filter_list, list) { |
| vlf->add = true; |
| } |
| adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; |
| adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; |
| clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
| i40evf_misc_irq_enable(adapter); |
| |
| mod_timer(&adapter->watchdog_timer, jiffies + 2); |
| |
| if (netif_running(adapter->netdev)) { |
| /* allocate transmit descriptors */ |
| err = i40evf_setup_all_tx_resources(adapter); |
| if (err) |
| goto reset_err; |
| |
| /* allocate receive descriptors */ |
| err = i40evf_setup_all_rx_resources(adapter); |
| if (err) |
| goto reset_err; |
| |
| i40evf_configure(adapter); |
| |
| err = i40evf_up_complete(adapter); |
| if (err) |
| goto reset_err; |
| |
| i40evf_irq_enable(adapter, true); |
| } else { |
| adapter->state = __I40EVF_DOWN; |
| } |
| |
| return; |
| reset_err: |
| dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); |
| i40evf_close(adapter->netdev); |
| } |
| |
| /** |
| * i40evf_adminq_task - worker thread to clean the admin queue |
| * @work: pointer to work_struct containing our data |
| **/ |
| static void i40evf_adminq_task(struct work_struct *work) |
| { |
| struct i40evf_adapter *adapter = |
| container_of(work, struct i40evf_adapter, adminq_task); |
| struct i40e_hw *hw = &adapter->hw; |
| struct i40e_arq_event_info event; |
| struct i40e_virtchnl_msg *v_msg; |
| i40e_status ret; |
| u32 val, oldval; |
| u16 pending; |
| |
| if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) |
| goto out; |
| |
| event.buf_len = I40EVF_MAX_AQ_BUF_SIZE; |
| event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); |
| if (!event.msg_buf) |
| goto out; |
| |
| v_msg = (struct i40e_virtchnl_msg *)&event.desc; |
| do { |
| ret = i40evf_clean_arq_element(hw, &event, &pending); |
| if (ret || !v_msg->v_opcode) |
| break; /* No event to process or error cleaning ARQ */ |
| |
| i40evf_virtchnl_completion(adapter, v_msg->v_opcode, |
| v_msg->v_retval, event.msg_buf, |
| event.msg_len); |
| if (pending != 0) |
| memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE); |
| } while (pending); |
| |
| if ((adapter->flags & |
| (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED)) || |
| adapter->state == __I40EVF_RESETTING) |
| goto freedom; |
| |
| /* check for error indications */ |
| val = rd32(hw, hw->aq.arq.len); |
| if (val == 0xdeadbeef) /* indicates device in reset */ |
| goto freedom; |
| oldval = val; |
| if (val & I40E_VF_ARQLEN1_ARQVFE_MASK) { |
| dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n"); |
| val &= ~I40E_VF_ARQLEN1_ARQVFE_MASK; |
| } |
| if (val & I40E_VF_ARQLEN1_ARQOVFL_MASK) { |
| dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n"); |
| val &= ~I40E_VF_ARQLEN1_ARQOVFL_MASK; |
| } |
| if (val & I40E_VF_ARQLEN1_ARQCRIT_MASK) { |
| dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n"); |
| val &= ~I40E_VF_ARQLEN1_ARQCRIT_MASK; |
| } |
| if (oldval != val) |
| wr32(hw, hw->aq.arq.len, val); |
| |
| val = rd32(hw, hw->aq.asq.len); |
| oldval = val; |
| if (val & I40E_VF_ATQLEN1_ATQVFE_MASK) { |
| dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n"); |
| val &= ~I40E_VF_ATQLEN1_ATQVFE_MASK; |
| } |
| if (val & I40E_VF_ATQLEN1_ATQOVFL_MASK) { |
| dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n"); |
| val &= ~I40E_VF_ATQLEN1_ATQOVFL_MASK; |
| } |
| if (val & I40E_VF_ATQLEN1_ATQCRIT_MASK) { |
| dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n"); |
| val &= ~I40E_VF_ATQLEN1_ATQCRIT_MASK; |
| } |
| if (oldval != val) |
| wr32(hw, hw->aq.asq.len, val); |
| |
| freedom: |
| kfree(event.msg_buf); |
| out: |
| /* re-enable Admin queue interrupt cause */ |
| i40evf_misc_irq_enable(adapter); |
| } |
| |
| /** |
| * i40evf_free_all_tx_resources - Free Tx Resources for All Queues |
| * @adapter: board private structure |
| * |
| * Free all transmit software resources |
| **/ |
| void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter) |
| { |
| int i; |
| |
| if (!adapter->tx_rings) |
| return; |
| |
| for (i = 0; i < adapter->num_active_queues; i++) |
| if (adapter->tx_rings[i].desc) |
| i40evf_free_tx_resources(&adapter->tx_rings[i]); |
| } |
| |
| /** |
| * i40evf_setup_all_tx_resources - allocate all queues Tx resources |
| * @adapter: board private structure |
| * |
| * If this function returns with an error, then it's possible one or |
| * more of the rings is populated (while the rest are not). It is the |
| * callers duty to clean those orphaned rings. |
| * |
| * Return 0 on success, negative on failure |
| **/ |
| static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter) |
| { |
| int i, err = 0; |
| |
| for (i = 0; i < adapter->num_active_queues; i++) { |
| adapter->tx_rings[i].count = adapter->tx_desc_count; |
| err = i40evf_setup_tx_descriptors(&adapter->tx_rings[i]); |
| if (!err) |
| continue; |
| dev_err(&adapter->pdev->dev, |
| "Allocation for Tx Queue %u failed\n", i); |
| break; |
| } |
| |
| return err; |
| } |
| |
| /** |
| * i40evf_setup_all_rx_resources - allocate all queues Rx resources |
| * @adapter: board private structure |
| * |
| * If this function returns with an error, then it's possible one or |
| * more of the rings is populated (while the rest are not). It is the |
| * callers duty to clean those orphaned rings. |
| * |
| * Return 0 on success, negative on failure |
| **/ |
| static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter) |
| { |
| int i, err = 0; |
| |
| for (i = 0; i < adapter->num_active_queues; i++) { |
| adapter->rx_rings[i].count = adapter->rx_desc_count; |
| err = i40evf_setup_rx_descriptors(&adapter->rx_rings[i]); |
| if (!err) |
| continue; |
| dev_err(&adapter->pdev->dev, |
| "Allocation for Rx Queue %u failed\n", i); |
| break; |
| } |
| return err; |
| } |
| |
| /** |
| * i40evf_free_all_rx_resources - Free Rx Resources for All Queues |
| * @adapter: board private structure |
| * |
| * Free all receive software resources |
| **/ |
| void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter) |
| { |
| int i; |
| |
| if (!adapter->rx_rings) |
| return; |
| |
| for (i = 0; i < adapter->num_active_queues; i++) |
| if (adapter->rx_rings[i].desc) |
| i40evf_free_rx_resources(&adapter->rx_rings[i]); |
| } |
| |
| /** |
| * i40evf_open - Called when a network interface is made active |
| * @netdev: network interface device structure |
| * |
| * Returns 0 on success, negative value on failure |
| * |
| * The open entry point is called when a network interface is made |
| * active by the system (IFF_UP). At this point all resources needed |
| * for transmit and receive operations are allocated, the interrupt |
| * handler is registered with the OS, the watchdog timer is started, |
| * and the stack is notified that the interface is ready. |
| **/ |
| static int i40evf_open(struct net_device *netdev) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| int err; |
| |
| if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { |
| dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); |
| return -EIO; |
| } |
| |
| if (adapter->state != __I40EVF_DOWN) |
| return -EBUSY; |
| |
| /* allocate transmit descriptors */ |
| err = i40evf_setup_all_tx_resources(adapter); |
| if (err) |
| goto err_setup_tx; |
| |
| /* allocate receive descriptors */ |
| err = i40evf_setup_all_rx_resources(adapter); |
| if (err) |
| goto err_setup_rx; |
| |
| /* clear any pending interrupts, may auto mask */ |
| err = i40evf_request_traffic_irqs(adapter, netdev->name); |
| if (err) |
| goto err_req_irq; |
| |
| i40evf_add_filter(adapter, adapter->hw.mac.addr); |
| i40evf_configure(adapter); |
| |
| err = i40evf_up_complete(adapter); |
| if (err) |
| goto err_req_irq; |
| |
| i40evf_irq_enable(adapter, true); |
| |
| return 0; |
| |
| err_req_irq: |
| i40evf_down(adapter); |
| i40evf_free_traffic_irqs(adapter); |
| err_setup_rx: |
| i40evf_free_all_rx_resources(adapter); |
| err_setup_tx: |
| i40evf_free_all_tx_resources(adapter); |
| |
| return err; |
| } |
| |
| /** |
| * i40evf_close - Disables a network interface |
| * @netdev: network interface device structure |
| * |
| * Returns 0, this is not allowed to fail |
| * |
| * The close entry point is called when an interface is de-activated |
| * by the OS. The hardware is still under the drivers control, but |
| * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) |
| * are freed, along with all transmit and receive resources. |
| **/ |
| static int i40evf_close(struct net_device *netdev) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| |
| if (adapter->state <= __I40EVF_DOWN_PENDING) |
| return 0; |
| |
| |
| set_bit(__I40E_DOWN, &adapter->vsi.state); |
| |
| i40evf_down(adapter); |
| adapter->state = __I40EVF_DOWN_PENDING; |
| i40evf_free_traffic_irqs(adapter); |
| |
| return 0; |
| } |
| |
| /** |
| * i40evf_get_stats - Get System Network Statistics |
| * @netdev: network interface device structure |
| * |
| * Returns the address of the device statistics structure. |
| * The statistics are actually updated from the timer callback. |
| **/ |
| static struct net_device_stats *i40evf_get_stats(struct net_device *netdev) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| |
| /* only return the current stats */ |
| return &adapter->net_stats; |
| } |
| |
| /** |
| * i40evf_change_mtu - Change the Maximum Transfer Unit |
| * @netdev: network interface device structure |
| * @new_mtu: new value for maximum frame size |
| * |
| * Returns 0 on success, negative on failure |
| **/ |
| static int i40evf_change_mtu(struct net_device *netdev, int new_mtu) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
| |
| if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER)) |
| return -EINVAL; |
| |
| netdev->mtu = new_mtu; |
| adapter->flags |= I40EVF_FLAG_RESET_NEEDED; |
| schedule_work(&adapter->reset_task); |
| |
| return 0; |
| } |
| |
| #define I40EVF_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_TX |\ |
| NETIF_F_HW_VLAN_CTAG_RX |\ |
| NETIF_F_HW_VLAN_CTAG_FILTER) |
| |
| /** |
| * i40evf_fix_features - fix up the netdev feature bits |
| * @netdev: our net device |
| * @features: desired feature bits |
| * |
| * Returns fixed-up features bits |
| **/ |
| static netdev_features_t i40evf_fix_features(struct net_device *netdev, |
| netdev_features_t features) |
| { |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| |
| features &= ~I40EVF_VLAN_FEATURES; |
| if (adapter->vf_res->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) |
| features |= I40EVF_VLAN_FEATURES; |
| return features; |
| } |
| |
| static const struct net_device_ops i40evf_netdev_ops = { |
| .ndo_open = i40evf_open, |
| .ndo_stop = i40evf_close, |
| .ndo_start_xmit = i40evf_xmit_frame, |
| .ndo_get_stats = i40evf_get_stats, |
| .ndo_set_rx_mode = i40evf_set_rx_mode, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_set_mac_address = i40evf_set_mac, |
| .ndo_change_mtu = i40evf_change_mtu, |
| .ndo_tx_timeout = i40evf_tx_timeout, |
| .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid, |
| .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid, |
| .ndo_fix_features = i40evf_fix_features, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = i40evf_netpoll, |
| #endif |
| }; |
| |
| /** |
| * i40evf_check_reset_complete - check that VF reset is complete |
| * @hw: pointer to hw struct |
| * |
| * Returns 0 if device is ready to use, or -EBUSY if it's in reset. |
| **/ |
| static int i40evf_check_reset_complete(struct i40e_hw *hw) |
| { |
| u32 rstat; |
| int i; |
| |
| for (i = 0; i < 100; i++) { |
| rstat = rd32(hw, I40E_VFGEN_RSTAT) & |
| I40E_VFGEN_RSTAT_VFR_STATE_MASK; |
| if ((rstat == I40E_VFR_VFACTIVE) || |
| (rstat == I40E_VFR_COMPLETED)) |
| return 0; |
| usleep_range(10, 20); |
| } |
| return -EBUSY; |
| } |
| |
| /** |
| * i40evf_process_config - Process the config information we got from the PF |
| * @adapter: board private structure |
| * |
| * Verify that we have a valid config struct, and set up our netdev features |
| * and our VSI struct. |
| **/ |
| int i40evf_process_config(struct i40evf_adapter *adapter) |
| { |
| struct i40e_virtchnl_vf_resource *vfres = adapter->vf_res; |
| struct net_device *netdev = adapter->netdev; |
| struct i40e_vsi *vsi = &adapter->vsi; |
| int i; |
| |
| /* got VF config message back from PF, now we can parse it */ |
| for (i = 0; i < vfres->num_vsis; i++) { |
| if (vfres->vsi_res[i].vsi_type == I40E_VSI_SRIOV) |
| adapter->vsi_res = &vfres->vsi_res[i]; |
| } |
| if (!adapter->vsi_res) { |
| dev_err(&adapter->pdev->dev, "No LAN VSI found\n"); |
| return -ENODEV; |
| } |
| |
| netdev->hw_enc_features |= NETIF_F_SG | |
| NETIF_F_IP_CSUM | |
| NETIF_F_IPV6_CSUM | |
| NETIF_F_HIGHDMA | |
| NETIF_F_SOFT_FEATURES | |
| NETIF_F_TSO | |
| NETIF_F_TSO_ECN | |
| NETIF_F_TSO6 | |
| NETIF_F_GSO_GRE | |
| NETIF_F_GSO_GRE_CSUM | |
| NETIF_F_GSO_IPIP | |
| NETIF_F_GSO_SIT | |
| NETIF_F_GSO_UDP_TUNNEL | |
| NETIF_F_GSO_UDP_TUNNEL_CSUM | |
| NETIF_F_GSO_PARTIAL | |
| NETIF_F_SCTP_CRC | |
| NETIF_F_RXHASH | |
| NETIF_F_RXCSUM | |
| 0; |
| |
| if (!(adapter->flags & I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE)) |
| netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM; |
| |
| netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM; |
| |
| /* record features VLANs can make use of */ |
| netdev->vlan_features |= netdev->hw_enc_features | |
| NETIF_F_TSO_MANGLEID; |
| |
| /* Write features and hw_features separately to avoid polluting |
| * with, or dropping, features that are set when we registgered. |
| */ |
| netdev->hw_features |= netdev->hw_enc_features; |
| |
| netdev->features |= netdev->hw_enc_features | I40EVF_VLAN_FEATURES; |
| netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID; |
| |
| /* disable VLAN features if not supported */ |
| if (!(vfres->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_VLAN)) |
| netdev->features ^= I40EVF_VLAN_FEATURES; |
| |
| adapter->vsi.id = adapter->vsi_res->vsi_id; |
| |
| adapter->vsi.back = adapter; |
| adapter->vsi.base_vector = 1; |
| adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK; |
| adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC | |
| ITR_REG_TO_USEC(I40E_ITR_RX_DEF)); |
| adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC | |
| ITR_REG_TO_USEC(I40E_ITR_TX_DEF)); |
| vsi->netdev = adapter->netdev; |
| vsi->qs_handle = adapter->vsi_res->qset_handle; |
| if (vfres->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF) { |
| adapter->rss_key_size = vfres->rss_key_size; |
| adapter->rss_lut_size = vfres->rss_lut_size; |
| } else { |
| adapter->rss_key_size = I40EVF_HKEY_ARRAY_SIZE; |
| adapter->rss_lut_size = I40EVF_HLUT_ARRAY_SIZE; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * i40evf_init_task - worker thread to perform delayed initialization |
| * @work: pointer to work_struct containing our data |
| * |
| * This task completes the work that was begun in probe. Due to the nature |
| * of VF-PF communications, we may need to wait tens of milliseconds to get |
| * responses back from the PF. Rather than busy-wait in probe and bog down the |
| * whole system, we'll do it in a task so we can sleep. |
| * This task only runs during driver init. Once we've established |
| * communications with the PF driver and set up our netdev, the watchdog |
| * takes over. |
| **/ |
| static void i40evf_init_task(struct work_struct *work) |
| { |
| struct i40evf_adapter *adapter = container_of(work, |
| struct i40evf_adapter, |
| init_task.work); |
| struct net_device *netdev = adapter->netdev; |
| struct i40e_hw *hw = &adapter->hw; |
| struct pci_dev *pdev = adapter->pdev; |
| int err, bufsz; |
| |
| switch (adapter->state) { |
| case __I40EVF_STARTUP: |
| /* driver loaded, probe complete */ |
| adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED; |
| adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; |
| err = i40e_set_mac_type(hw); |
| if (err) { |
| dev_err(&pdev->dev, "Failed to set MAC type (%d)\n", |
| err); |
| goto err; |
| } |
| err = i40evf_check_reset_complete(hw); |
| if (err) { |
| dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n", |
| err); |
| goto err; |
| } |
| hw->aq.num_arq_entries = I40EVF_AQ_LEN; |
| hw->aq.num_asq_entries = I40EVF_AQ_LEN; |
| hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE; |
| hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE; |
| |
| err = i40evf_init_adminq(hw); |
| if (err) { |
| dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", |
| err); |
| goto err; |
| } |
| err = i40evf_send_api_ver(adapter); |
| if (err) { |
| dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err); |
| i40evf_shutdown_adminq(hw); |
| goto err; |
| } |
| adapter->state = __I40EVF_INIT_VERSION_CHECK; |
| goto restart; |
| case __I40EVF_INIT_VERSION_CHECK: |
| if (!i40evf_asq_done(hw)) { |
| dev_err(&pdev->dev, "Admin queue command never completed\n"); |
| i40evf_shutdown_adminq(hw); |
| adapter->state = __I40EVF_STARTUP; |
| goto err; |
| } |
| |
| /* aq msg sent, awaiting reply */ |
| err = i40evf_verify_api_ver(adapter); |
| if (err) { |
| if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) |
| err = i40evf_send_api_ver(adapter); |
| else |
| dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n", |
| adapter->pf_version.major, |
| adapter->pf_version.minor, |
| I40E_VIRTCHNL_VERSION_MAJOR, |
| I40E_VIRTCHNL_VERSION_MINOR); |
| goto err; |
| } |
| err = i40evf_send_vf_config_msg(adapter); |
| if (err) { |
| dev_err(&pdev->dev, "Unable to send config request (%d)\n", |
| err); |
| goto err; |
| } |
| adapter->state = __I40EVF_INIT_GET_RESOURCES; |
| goto restart; |
| case __I40EVF_INIT_GET_RESOURCES: |
| /* aq msg sent, awaiting reply */ |
| if (!adapter->vf_res) { |
| bufsz = sizeof(struct i40e_virtchnl_vf_resource) + |
| (I40E_MAX_VF_VSI * |
| sizeof(struct i40e_virtchnl_vsi_resource)); |
| adapter->vf_res = kzalloc(bufsz, GFP_KERNEL); |
| if (!adapter->vf_res) |
| goto err; |
| } |
| err = i40evf_get_vf_config(adapter); |
| if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) { |
| err = i40evf_send_vf_config_msg(adapter); |
| goto err; |
| } else if (err == I40E_ERR_PARAM) { |
| /* We only get ERR_PARAM if the device is in a very bad |
| * state or if we've been disabled for previous bad |
| * behavior. Either way, we're done now. |
| */ |
| i40evf_shutdown_adminq(hw); |
| dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n"); |
| return; |
| } |
| if (err) { |
| dev_err(&pdev->dev, "Unable to get VF config (%d)\n", |
| err); |
| goto err_alloc; |
| } |
| adapter->state = __I40EVF_INIT_SW; |
| break; |
| default: |
| goto err_alloc; |
| } |
| |
| if (hw->mac.type == I40E_MAC_X722_VF) |
| adapter->flags |= I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE; |
| |
| if (i40evf_process_config(adapter)) |
| goto err_alloc; |
| adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; |
| |
| adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED; |
| |
| netdev->netdev_ops = &i40evf_netdev_ops; |
| i40evf_set_ethtool_ops(netdev); |
| netdev->watchdog_timeo = 5 * HZ; |
| |
| if (!is_valid_ether_addr(adapter->hw.mac.addr)) { |
| dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n", |
| adapter->hw.mac.addr); |
| eth_hw_addr_random(netdev); |
| ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr); |
| } else { |
| adapter->flags |= I40EVF_FLAG_ADDR_SET_BY_PF; |
| ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); |
| ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); |
| } |
| |
| init_timer(&adapter->watchdog_timer); |
| adapter->watchdog_timer.function = &i40evf_watchdog_timer; |
| adapter->watchdog_timer.data = (unsigned long)adapter; |
| mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| |
| adapter->num_active_queues = min_t(int, |
| adapter->vsi_res->num_queue_pairs, |
| (int)(num_online_cpus())); |
| adapter->tx_desc_count = I40EVF_DEFAULT_TXD; |
| adapter->rx_desc_count = I40EVF_DEFAULT_RXD; |
| err = i40evf_init_interrupt_scheme(adapter); |
| if (err) |
| goto err_sw_init; |
| i40evf_map_rings_to_vectors(adapter); |
| if (adapter->vf_res->vf_offload_flags & |
| I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) |
| adapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE; |
| |
| err = i40evf_request_misc_irq(adapter); |
| if (err) |
| goto err_sw_init; |
| |
| netif_carrier_off(netdev); |
| |
| if (!adapter->netdev_registered) { |
| err = register_netdev(netdev); |
| if (err) |
| goto err_register; |
| } |
| |
| adapter->netdev_registered = true; |
| |
| netif_tx_stop_all_queues(netdev); |
| |
| dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr); |
| if (netdev->features & NETIF_F_GRO) |
| dev_info(&pdev->dev, "GRO is enabled\n"); |
| |
| adapter->state = __I40EVF_DOWN; |
| set_bit(__I40E_DOWN, &adapter->vsi.state); |
| i40evf_misc_irq_enable(adapter); |
| |
| adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL); |
| adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL); |
| if (!adapter->rss_key || !adapter->rss_lut) |
| goto err_mem; |
| |
| if (RSS_AQ(adapter)) { |
| adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_RSS; |
| mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); |
| } else { |
| i40evf_init_rss(adapter); |
| } |
| return; |
| restart: |
| schedule_delayed_work(&adapter->init_task, msecs_to_jiffies(30)); |
| return; |
| err_mem: |
| i40evf_free_rss(adapter); |
| err_register: |
| i40evf_free_misc_irq(adapter); |
| err_sw_init: |
| i40evf_reset_interrupt_capability(adapter); |
| err_alloc: |
| kfree(adapter->vf_res); |
| adapter->vf_res = NULL; |
| err: |
| /* Things went into the weeds, so try again later */ |
| if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) { |
| dev_err(&pdev->dev, "Failed to communicate with PF; waiting before retry\n"); |
| adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; |
| i40evf_shutdown_adminq(hw); |
| adapter->state = __I40EVF_STARTUP; |
| schedule_delayed_work(&adapter->init_task, HZ * 5); |
| return; |
| } |
| schedule_delayed_work(&adapter->init_task, HZ); |
| } |
| |
| /** |
| * i40evf_shutdown - Shutdown the device in preparation for a reboot |
| * @pdev: pci device structure |
| **/ |
| static void i40evf_shutdown(struct pci_dev *pdev) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| |
| netif_device_detach(netdev); |
| |
| if (netif_running(netdev)) |
| i40evf_close(netdev); |
| |
| /* Prevent the watchdog from running. */ |
| adapter->state = __I40EVF_REMOVE; |
| adapter->aq_required = 0; |
| |
| #ifdef CONFIG_PM |
| pci_save_state(pdev); |
| |
| #endif |
| pci_disable_device(pdev); |
| } |
| |
| /** |
| * i40evf_probe - Device Initialization Routine |
| * @pdev: PCI device information struct |
| * @ent: entry in i40evf_pci_tbl |
| * |
| * Returns 0 on success, negative on failure |
| * |
| * i40evf_probe initializes an adapter identified by a pci_dev structure. |
| * The OS initialization, configuring of the adapter private structure, |
| * and a hardware reset occur. |
| **/ |
| static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| struct net_device *netdev; |
| struct i40evf_adapter *adapter = NULL; |
| struct i40e_hw *hw = NULL; |
| int err; |
| |
| err = pci_enable_device(pdev); |
| if (err) |
| return err; |
| |
| err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
| if (err) { |
| err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
| if (err) { |
| dev_err(&pdev->dev, |
| "DMA configuration failed: 0x%x\n", err); |
| goto err_dma; |
| } |
| } |
| |
| err = pci_request_regions(pdev, i40evf_driver_name); |
| if (err) { |
| dev_err(&pdev->dev, |
| "pci_request_regions failed 0x%x\n", err); |
| goto err_pci_reg; |
| } |
| |
| pci_enable_pcie_error_reporting(pdev); |
| |
| pci_set_master(pdev); |
| |
| netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter), MAX_QUEUES); |
| if (!netdev) { |
| err = -ENOMEM; |
| goto err_alloc_etherdev; |
| } |
| |
| SET_NETDEV_DEV(netdev, &pdev->dev); |
| |
| pci_set_drvdata(pdev, netdev); |
| adapter = netdev_priv(netdev); |
| |
| adapter->netdev = netdev; |
| adapter->pdev = pdev; |
| |
| hw = &adapter->hw; |
| hw->back = adapter; |
| |
| adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; |
| adapter->state = __I40EVF_STARTUP; |
| |
| /* Call save state here because it relies on the adapter struct. */ |
| pci_save_state(pdev); |
| |
| hw->hw_addr = ioremap(pci_resource_start(pdev, 0), |
| pci_resource_len(pdev, 0)); |
| if (!hw->hw_addr) { |
| err = -EIO; |
| goto err_ioremap; |
| } |
| hw->vendor_id = pdev->vendor; |
| hw->device_id = pdev->device; |
| pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); |
| hw->subsystem_vendor_id = pdev->subsystem_vendor; |
| hw->subsystem_device_id = pdev->subsystem_device; |
| hw->bus.device = PCI_SLOT(pdev->devfn); |
| hw->bus.func = PCI_FUNC(pdev->devfn); |
| |
| /* set up the locks for the AQ, do this only once in probe |
| * and destroy them only once in remove |
| */ |
| mutex_init(&hw->aq.asq_mutex); |
| mutex_init(&hw->aq.arq_mutex); |
| |
| INIT_LIST_HEAD(&adapter->mac_filter_list); |
| INIT_LIST_HEAD(&adapter->vlan_filter_list); |
| |
| INIT_WORK(&adapter->reset_task, i40evf_reset_task); |
| INIT_WORK(&adapter->adminq_task, i40evf_adminq_task); |
| INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task); |
| INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task); |
| schedule_delayed_work(&adapter->init_task, |
| msecs_to_jiffies(5 * (pdev->devfn & 0x07))); |
| |
| return 0; |
| |
| err_ioremap: |
| free_netdev(netdev); |
| err_alloc_etherdev: |
| pci_release_regions(pdev); |
| err_pci_reg: |
| err_dma: |
| pci_disable_device(pdev); |
| return err; |
| } |
| |
| #ifdef CONFIG_PM |
| /** |
| * i40evf_suspend - Power management suspend routine |
| * @pdev: PCI device information struct |
| * @state: unused |
| * |
| * Called when the system (VM) is entering sleep/suspend. |
| **/ |
| static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| int retval = 0; |
| |
| netif_device_detach(netdev); |
| |
| if (netif_running(netdev)) { |
| rtnl_lock(); |
| i40evf_down(adapter); |
| rtnl_unlock(); |
| } |
| i40evf_free_misc_irq(adapter); |
| i40evf_reset_interrupt_capability(adapter); |
| |
| retval = pci_save_state(pdev); |
| if (retval) |
| return retval; |
| |
| pci_disable_device(pdev); |
| |
| return 0; |
| } |
| |
| /** |
| * i40evf_resume - Power management resume routine |
| * @pdev: PCI device information struct |
| * |
| * Called when the system (VM) is resumed from sleep/suspend. |
| **/ |
| static int i40evf_resume(struct pci_dev *pdev) |
| { |
| struct i40evf_adapter *adapter = pci_get_drvdata(pdev); |
| struct net_device *netdev = adapter->netdev; |
| u32 err; |
| |
| pci_set_power_state(pdev, PCI_D0); |
| pci_restore_state(pdev); |
| /* pci_restore_state clears dev->state_saved so call |
| * pci_save_state to restore it. |
| */ |
| pci_save_state(pdev); |
| |
| err = pci_enable_device_mem(pdev); |
| if (err) { |
| dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n"); |
| return err; |
| } |
| pci_set_master(pdev); |
| |
| rtnl_lock(); |
| err = i40evf_set_interrupt_capability(adapter); |
| if (err) { |
| rtnl_unlock(); |
| dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); |
| return err; |
| } |
| err = i40evf_request_misc_irq(adapter); |
| rtnl_unlock(); |
| if (err) { |
| dev_err(&pdev->dev, "Cannot get interrupt vector.\n"); |
| return err; |
| } |
| |
| schedule_work(&adapter->reset_task); |
| |
| netif_device_attach(netdev); |
| |
| return err; |
| } |
| |
| #endif /* CONFIG_PM */ |
| /** |
| * i40evf_remove - Device Removal Routine |
| * @pdev: PCI device information struct |
| * |
| * i40evf_remove is called by the PCI subsystem to alert the driver |
| * that it should release a PCI device. The could be caused by a |
| * Hot-Plug event, or because the driver is going to be removed from |
| * memory. |
| **/ |
| static void i40evf_remove(struct pci_dev *pdev) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct i40evf_adapter *adapter = netdev_priv(netdev); |
| struct i40evf_mac_filter *f, *ftmp; |
| struct i40e_hw *hw = &adapter->hw; |
| |
| cancel_delayed_work_sync(&adapter->init_task); |
| cancel_work_sync(&adapter->reset_task); |
| |
| if (adapter->netdev_registered) { |
| unregister_netdev(netdev); |
| adapter->netdev_registered = false; |
| } |
| |
| /* Shut down all the garbage mashers on the detention level */ |
| adapter->state = __I40EVF_REMOVE; |
| adapter->aq_required = 0; |
| i40evf_request_reset(adapter); |
| msleep(50); |
| /* If the FW isn't responding, kick it once, but only once. */ |
| if (!i40evf_asq_done(hw)) { |
| i40evf_request_reset(adapter); |
| msleep(50); |
| } |
| |
| if (adapter->msix_entries) { |
| i40evf_misc_irq_disable(adapter); |
| i40evf_free_misc_irq(adapter); |
| i40evf_reset_interrupt_capability(adapter); |
| i40evf_free_q_vectors(adapter); |
| } |
| |
| if (adapter->watchdog_timer.function) |
| del_timer_sync(&adapter->watchdog_timer); |
| |
| flush_scheduled_work(); |
| |
| i40evf_free_rss(adapter); |
| |
| if (hw->aq.asq.count) |
| i40evf_shutdown_adminq(hw); |
| |
| /* destroy the locks only once, here */ |
| mutex_destroy(&hw->aq.arq_mutex); |
| mutex_destroy(&hw->aq.asq_mutex); |
| |
| iounmap(hw->hw_addr); |
| pci_release_regions(pdev); |
| i40evf_free_all_tx_resources(adapter); |
| i40evf_free_all_rx_resources(adapter); |
| i40evf_free_queues(adapter); |
| kfree(adapter->vf_res); |
| /* If we got removed before an up/down sequence, we've got a filter |
| * hanging out there that we need to get rid of. |
| */ |
| list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { |
| list_del(&f->list); |
| kfree(f); |
| } |
| list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) { |
| list_del(&f->list); |
| kfree(f); |
| } |
| |
| free_netdev(netdev); |
| |
| pci_disable_pcie_error_reporting(pdev); |
| |
| pci_disable_device(pdev); |
| } |
| |
| static struct pci_driver i40evf_driver = { |
| .name = i40evf_driver_name, |
| .id_table = i40evf_pci_tbl, |
| .probe = i40evf_probe, |
| .remove = i40evf_remove, |
| #ifdef CONFIG_PM |
| .suspend = i40evf_suspend, |
| .resume = i40evf_resume, |
| #endif |
| .shutdown = i40evf_shutdown, |
| }; |
| |
| /** |
| * i40e_init_module - Driver Registration Routine |
| * |
| * i40e_init_module is the first routine called when the driver is |
| * loaded. All it does is register with the PCI subsystem. |
| **/ |
| static int __init i40evf_init_module(void) |
| { |
| int ret; |
| |
| pr_info("i40evf: %s - version %s\n", i40evf_driver_string, |
| i40evf_driver_version); |
| |
| pr_info("%s\n", i40evf_copyright); |
| |
| i40evf_wq = create_singlethread_workqueue(i40evf_driver_name); |
| if (!i40evf_wq) { |
| pr_err("%s: Failed to create workqueue\n", i40evf_driver_name); |
| return -ENOMEM; |
| } |
| ret = pci_register_driver(&i40evf_driver); |
| return ret; |
| } |
| |
| module_init(i40evf_init_module); |
| |
| /** |
| * i40e_exit_module - Driver Exit Cleanup Routine |
| * |
| * i40e_exit_module is called just before the driver is removed |
| * from memory. |
| **/ |
| static void __exit i40evf_exit_module(void) |
| { |
| pci_unregister_driver(&i40evf_driver); |
| destroy_workqueue(i40evf_wq); |
| } |
| |
| module_exit(i40evf_exit_module); |
| |
| /* i40evf_main.c */ |