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2543 lines
70 KiB
2543 lines
70 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* Copyright(c) 2013 - 2019 Intel Corporation. */ |
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|
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#include <linux/module.h> |
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#include <linux/interrupt.h> |
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#include <linux/aer.h> |
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|
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#include "fm10k.h" |
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|
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static const struct fm10k_info *fm10k_info_tbl[] = { |
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[fm10k_device_pf] = &fm10k_pf_info, |
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[fm10k_device_vf] = &fm10k_vf_info, |
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}; |
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|
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/* |
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* fm10k_pci_tbl - PCI Device ID Table |
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* |
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* Wildcard entries (PCI_ANY_ID) should come last |
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* Last entry must be all 0s |
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* |
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* { Vendor ID, Device ID, SubVendor ID, SubDevice ID, |
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* Class, Class Mask, private data (not used) } |
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*/ |
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static const struct pci_device_id fm10k_pci_tbl[] = { |
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{ PCI_VDEVICE(INTEL, FM10K_DEV_ID_PF), fm10k_device_pf }, |
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{ PCI_VDEVICE(INTEL, FM10K_DEV_ID_SDI_FM10420_QDA2), fm10k_device_pf }, |
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{ PCI_VDEVICE(INTEL, FM10K_DEV_ID_SDI_FM10420_DA2), fm10k_device_pf }, |
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{ PCI_VDEVICE(INTEL, FM10K_DEV_ID_VF), fm10k_device_vf }, |
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/* required last entry */ |
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{ 0, } |
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}; |
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MODULE_DEVICE_TABLE(pci, fm10k_pci_tbl); |
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|
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u16 fm10k_read_pci_cfg_word(struct fm10k_hw *hw, u32 reg) |
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{ |
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struct fm10k_intfc *interface = hw->back; |
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u16 value = 0; |
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|
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if (FM10K_REMOVED(hw->hw_addr)) |
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return ~value; |
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pci_read_config_word(interface->pdev, reg, &value); |
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if (value == 0xFFFF) |
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fm10k_write_flush(hw); |
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|
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return value; |
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} |
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|
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u32 fm10k_read_reg(struct fm10k_hw *hw, int reg) |
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{ |
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u32 __iomem *hw_addr = READ_ONCE(hw->hw_addr); |
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u32 value = 0; |
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|
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if (FM10K_REMOVED(hw_addr)) |
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return ~value; |
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value = readl(&hw_addr[reg]); |
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if (!(~value) && (!reg || !(~readl(hw_addr)))) { |
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struct fm10k_intfc *interface = hw->back; |
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struct net_device *netdev = interface->netdev; |
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|
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hw->hw_addr = NULL; |
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netif_device_detach(netdev); |
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netdev_err(netdev, "PCIe link lost, device now detached\n"); |
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} |
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return value; |
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} |
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static int fm10k_hw_ready(struct fm10k_intfc *interface) |
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{ |
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struct fm10k_hw *hw = &interface->hw; |
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fm10k_write_flush(hw); |
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|
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return FM10K_REMOVED(hw->hw_addr) ? -ENODEV : 0; |
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} |
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/** |
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* fm10k_macvlan_schedule - Schedule MAC/VLAN queue task |
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* @interface: fm10k private interface structure |
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* |
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* Schedule the MAC/VLAN queue monitor task. If the MAC/VLAN task cannot be |
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* started immediately, request that it be restarted when possible. |
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*/ |
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void fm10k_macvlan_schedule(struct fm10k_intfc *interface) |
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{ |
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/* Avoid processing the MAC/VLAN queue when the service task is |
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* disabled, or when we're resetting the device. |
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*/ |
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if (!test_bit(__FM10K_MACVLAN_DISABLE, interface->state) && |
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!test_and_set_bit(__FM10K_MACVLAN_SCHED, interface->state)) { |
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clear_bit(__FM10K_MACVLAN_REQUEST, interface->state); |
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/* We delay the actual start of execution in order to allow |
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* multiple MAC/VLAN updates to accumulate before handling |
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* them, and to allow some time to let the mailbox drain |
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* between runs. |
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*/ |
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queue_delayed_work(fm10k_workqueue, |
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&interface->macvlan_task, 10); |
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} else { |
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set_bit(__FM10K_MACVLAN_REQUEST, interface->state); |
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} |
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} |
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|
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/** |
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* fm10k_stop_macvlan_task - Stop the MAC/VLAN queue monitor |
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* @interface: fm10k private interface structure |
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* |
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* Wait until the MAC/VLAN queue task has stopped, and cancel any future |
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* requests. |
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*/ |
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static void fm10k_stop_macvlan_task(struct fm10k_intfc *interface) |
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{ |
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/* Disable the MAC/VLAN work item */ |
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set_bit(__FM10K_MACVLAN_DISABLE, interface->state); |
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|
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/* Make sure we waited until any current invocations have stopped */ |
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cancel_delayed_work_sync(&interface->macvlan_task); |
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|
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/* We set the __FM10K_MACVLAN_SCHED bit when we schedule the task. |
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* However, it may not be unset of the MAC/VLAN task never actually |
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* got a chance to run. Since we've canceled the task here, and it |
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* cannot be rescheuled right now, we need to ensure the scheduled bit |
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* gets unset. |
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*/ |
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clear_bit(__FM10K_MACVLAN_SCHED, interface->state); |
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} |
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/** |
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* fm10k_resume_macvlan_task - Restart the MAC/VLAN queue monitor |
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* @interface: fm10k private interface structure |
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* |
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* Clear the __FM10K_MACVLAN_DISABLE bit and, if a request occurred, schedule |
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* the MAC/VLAN work monitor. |
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*/ |
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static void fm10k_resume_macvlan_task(struct fm10k_intfc *interface) |
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{ |
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/* Re-enable the MAC/VLAN work item */ |
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clear_bit(__FM10K_MACVLAN_DISABLE, interface->state); |
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|
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/* We might have received a MAC/VLAN request while disabled. If so, |
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* kick off the queue now. |
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*/ |
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if (test_bit(__FM10K_MACVLAN_REQUEST, interface->state)) |
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fm10k_macvlan_schedule(interface); |
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} |
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|
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void fm10k_service_event_schedule(struct fm10k_intfc *interface) |
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{ |
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if (!test_bit(__FM10K_SERVICE_DISABLE, interface->state) && |
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!test_and_set_bit(__FM10K_SERVICE_SCHED, interface->state)) { |
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clear_bit(__FM10K_SERVICE_REQUEST, interface->state); |
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queue_work(fm10k_workqueue, &interface->service_task); |
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} else { |
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set_bit(__FM10K_SERVICE_REQUEST, interface->state); |
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} |
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} |
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static void fm10k_service_event_complete(struct fm10k_intfc *interface) |
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{ |
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WARN_ON(!test_bit(__FM10K_SERVICE_SCHED, interface->state)); |
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|
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/* flush memory to make sure state is correct before next watchog */ |
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smp_mb__before_atomic(); |
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clear_bit(__FM10K_SERVICE_SCHED, interface->state); |
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/* If a service event was requested since we started, immediately |
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* re-schedule now. This ensures we don't drop a request until the |
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* next timer event. |
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*/ |
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if (test_bit(__FM10K_SERVICE_REQUEST, interface->state)) |
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fm10k_service_event_schedule(interface); |
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} |
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static void fm10k_stop_service_event(struct fm10k_intfc *interface) |
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{ |
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set_bit(__FM10K_SERVICE_DISABLE, interface->state); |
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cancel_work_sync(&interface->service_task); |
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|
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/* It's possible that cancel_work_sync stopped the service task from |
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* running before it could actually start. In this case the |
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* __FM10K_SERVICE_SCHED bit will never be cleared. Since we know that |
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* the service task cannot be running at this point, we need to clear |
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* the scheduled bit, as otherwise the service task may never be |
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* restarted. |
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*/ |
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clear_bit(__FM10K_SERVICE_SCHED, interface->state); |
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} |
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static void fm10k_start_service_event(struct fm10k_intfc *interface) |
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{ |
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clear_bit(__FM10K_SERVICE_DISABLE, interface->state); |
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fm10k_service_event_schedule(interface); |
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} |
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/** |
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* fm10k_service_timer - Timer Call-back |
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* @t: pointer to timer data |
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**/ |
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static void fm10k_service_timer(struct timer_list *t) |
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{ |
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struct fm10k_intfc *interface = from_timer(interface, t, |
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service_timer); |
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/* Reset the timer */ |
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mod_timer(&interface->service_timer, (HZ * 2) + jiffies); |
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fm10k_service_event_schedule(interface); |
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} |
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|
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/** |
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* fm10k_prepare_for_reset - Prepare the driver and device for a pending reset |
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* @interface: fm10k private data structure |
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* |
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* This function prepares for a device reset by shutting as much down as we |
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* can. It does nothing and returns false if __FM10K_RESETTING was already set |
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* prior to calling this function. It returns true if it actually did work. |
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*/ |
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static bool fm10k_prepare_for_reset(struct fm10k_intfc *interface) |
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{ |
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struct net_device *netdev = interface->netdev; |
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|
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/* put off any impending NetWatchDogTimeout */ |
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netif_trans_update(netdev); |
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|
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/* Nothing to do if a reset is already in progress */ |
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if (test_and_set_bit(__FM10K_RESETTING, interface->state)) |
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return false; |
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/* As the MAC/VLAN task will be accessing registers it must not be |
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* running while we reset. Although the task will not be scheduled |
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* once we start resetting it may already be running |
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*/ |
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fm10k_stop_macvlan_task(interface); |
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rtnl_lock(); |
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fm10k_iov_suspend(interface->pdev); |
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if (netif_running(netdev)) |
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fm10k_close(netdev); |
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fm10k_mbx_free_irq(interface); |
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/* free interrupts */ |
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fm10k_clear_queueing_scheme(interface); |
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/* delay any future reset requests */ |
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interface->last_reset = jiffies + (10 * HZ); |
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rtnl_unlock(); |
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return true; |
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} |
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static int fm10k_handle_reset(struct fm10k_intfc *interface) |
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{ |
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struct net_device *netdev = interface->netdev; |
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struct fm10k_hw *hw = &interface->hw; |
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int err; |
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WARN_ON(!test_bit(__FM10K_RESETTING, interface->state)); |
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rtnl_lock(); |
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pci_set_master(interface->pdev); |
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/* reset and initialize the hardware so it is in a known state */ |
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err = hw->mac.ops.reset_hw(hw); |
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if (err) { |
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dev_err(&interface->pdev->dev, "reset_hw failed: %d\n", err); |
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goto reinit_err; |
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} |
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err = hw->mac.ops.init_hw(hw); |
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if (err) { |
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dev_err(&interface->pdev->dev, "init_hw failed: %d\n", err); |
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goto reinit_err; |
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} |
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err = fm10k_init_queueing_scheme(interface); |
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if (err) { |
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dev_err(&interface->pdev->dev, |
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"init_queueing_scheme failed: %d\n", err); |
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goto reinit_err; |
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} |
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/* re-associate interrupts */ |
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err = fm10k_mbx_request_irq(interface); |
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if (err) |
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goto err_mbx_irq; |
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err = fm10k_hw_ready(interface); |
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if (err) |
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goto err_open; |
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/* update hardware address for VFs if perm_addr has changed */ |
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if (hw->mac.type == fm10k_mac_vf) { |
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if (is_valid_ether_addr(hw->mac.perm_addr)) { |
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ether_addr_copy(hw->mac.addr, hw->mac.perm_addr); |
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ether_addr_copy(netdev->perm_addr, hw->mac.perm_addr); |
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ether_addr_copy(netdev->dev_addr, hw->mac.perm_addr); |
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netdev->addr_assign_type &= ~NET_ADDR_RANDOM; |
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} |
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if (hw->mac.vlan_override) |
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netdev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; |
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else |
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netdev->features |= NETIF_F_HW_VLAN_CTAG_RX; |
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} |
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err = netif_running(netdev) ? fm10k_open(netdev) : 0; |
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if (err) |
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goto err_open; |
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fm10k_iov_resume(interface->pdev); |
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rtnl_unlock(); |
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fm10k_resume_macvlan_task(interface); |
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clear_bit(__FM10K_RESETTING, interface->state); |
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return err; |
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err_open: |
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fm10k_mbx_free_irq(interface); |
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err_mbx_irq: |
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fm10k_clear_queueing_scheme(interface); |
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reinit_err: |
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netif_device_detach(netdev); |
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rtnl_unlock(); |
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clear_bit(__FM10K_RESETTING, interface->state); |
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return err; |
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} |
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static void fm10k_detach_subtask(struct fm10k_intfc *interface) |
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{ |
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struct net_device *netdev = interface->netdev; |
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u32 __iomem *hw_addr; |
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u32 value; |
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/* do nothing if netdev is still present or hw_addr is set */ |
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if (netif_device_present(netdev) || interface->hw.hw_addr) |
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return; |
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|
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/* We've lost the PCIe register space, and can no longer access the |
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* device. Shut everything except the detach subtask down and prepare |
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* to reset the device in case we recover. If we actually prepare for |
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* reset, indicate that we're detached. |
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*/ |
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if (fm10k_prepare_for_reset(interface)) |
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set_bit(__FM10K_RESET_DETACHED, interface->state); |
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/* check the real address space to see if we've recovered */ |
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hw_addr = READ_ONCE(interface->uc_addr); |
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value = readl(hw_addr); |
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if (~value) { |
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int err; |
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/* Make sure the reset was initiated because we detached, |
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* otherwise we might race with a different reset flow. |
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*/ |
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if (!test_and_clear_bit(__FM10K_RESET_DETACHED, |
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interface->state)) |
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return; |
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/* Restore the hardware address */ |
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interface->hw.hw_addr = interface->uc_addr; |
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|
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/* PCIe link has been restored, and the device is active |
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* again. Restore everything and reset the device. |
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*/ |
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err = fm10k_handle_reset(interface); |
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if (err) { |
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netdev_err(netdev, "Unable to reset device: %d\n", err); |
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interface->hw.hw_addr = NULL; |
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return; |
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} |
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/* Re-attach the netdev */ |
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netif_device_attach(netdev); |
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netdev_warn(netdev, "PCIe link restored, device now attached\n"); |
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return; |
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} |
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} |
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static void fm10k_reset_subtask(struct fm10k_intfc *interface) |
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{ |
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int err; |
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|
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if (!test_and_clear_bit(FM10K_FLAG_RESET_REQUESTED, |
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interface->flags)) |
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return; |
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|
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/* If another thread has already prepared to reset the device, we |
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* should not attempt to handle a reset here, since we'd race with |
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* that thread. This may happen if we suspend the device or if the |
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* PCIe link is lost. In this case, we'll just ignore the RESET |
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* request, as it will (eventually) be taken care of when the thread |
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* which actually started the reset is finished. |
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*/ |
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if (!fm10k_prepare_for_reset(interface)) |
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return; |
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netdev_err(interface->netdev, "Reset interface\n"); |
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err = fm10k_handle_reset(interface); |
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if (err) |
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dev_err(&interface->pdev->dev, |
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"fm10k_handle_reset failed: %d\n", err); |
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} |
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/** |
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* fm10k_configure_swpri_map - Configure Receive SWPRI to PC mapping |
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* @interface: board private structure |
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* |
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* Configure the SWPRI to PC mapping for the port. |
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**/ |
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static void fm10k_configure_swpri_map(struct fm10k_intfc *interface) |
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{ |
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struct net_device *netdev = interface->netdev; |
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struct fm10k_hw *hw = &interface->hw; |
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int i; |
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|
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/* clear flag indicating update is needed */ |
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clear_bit(FM10K_FLAG_SWPRI_CONFIG, interface->flags); |
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|
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/* these registers are only available on the PF */ |
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if (hw->mac.type != fm10k_mac_pf) |
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return; |
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|
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/* configure SWPRI to PC map */ |
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for (i = 0; i < FM10K_SWPRI_MAX; i++) |
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fm10k_write_reg(hw, FM10K_SWPRI_MAP(i), |
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netdev_get_prio_tc_map(netdev, i)); |
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} |
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|
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/** |
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* fm10k_watchdog_update_host_state - Update the link status based on host. |
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* @interface: board private structure |
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**/ |
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static void fm10k_watchdog_update_host_state(struct fm10k_intfc *interface) |
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{ |
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struct fm10k_hw *hw = &interface->hw; |
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s32 err; |
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|
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if (test_bit(__FM10K_LINK_DOWN, interface->state)) { |
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interface->host_ready = false; |
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if (time_is_after_jiffies(interface->link_down_event)) |
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return; |
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clear_bit(__FM10K_LINK_DOWN, interface->state); |
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} |
|
|
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if (test_bit(FM10K_FLAG_SWPRI_CONFIG, interface->flags)) { |
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if (rtnl_trylock()) { |
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fm10k_configure_swpri_map(interface); |
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rtnl_unlock(); |
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} |
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} |
|
|
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/* lock the mailbox for transmit and receive */ |
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fm10k_mbx_lock(interface); |
|
|
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err = hw->mac.ops.get_host_state(hw, &interface->host_ready); |
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if (err && time_is_before_jiffies(interface->last_reset)) |
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set_bit(FM10K_FLAG_RESET_REQUESTED, interface->flags); |
|
|
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/* free the lock */ |
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fm10k_mbx_unlock(interface); |
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} |
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|
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/** |
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* fm10k_mbx_subtask - Process upstream and downstream mailboxes |
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* @interface: board private structure |
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* |
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* This function will process both the upstream and downstream mailboxes. |
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**/ |
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static void fm10k_mbx_subtask(struct fm10k_intfc *interface) |
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{ |
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/* If we're resetting, bail out */ |
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if (test_bit(__FM10K_RESETTING, interface->state)) |
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return; |
|
|
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/* process upstream mailbox and update device state */ |
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fm10k_watchdog_update_host_state(interface); |
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|
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/* process downstream mailboxes */ |
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fm10k_iov_mbx(interface); |
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} |
|
|
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/** |
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* fm10k_watchdog_host_is_ready - Update netdev status based on host ready |
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* @interface: board private structure |
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**/ |
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static void fm10k_watchdog_host_is_ready(struct fm10k_intfc *interface) |
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{ |
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struct net_device *netdev = interface->netdev; |
|
|
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/* only continue if link state is currently down */ |
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if (netif_carrier_ok(netdev)) |
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return; |
|
|
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netif_info(interface, drv, netdev, "NIC Link is up\n"); |
|
|
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netif_carrier_on(netdev); |
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netif_tx_wake_all_queues(netdev); |
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} |
|
|
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/** |
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* fm10k_watchdog_host_not_ready - Update netdev status based on host not ready |
|
* @interface: board private structure |
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**/ |
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static void fm10k_watchdog_host_not_ready(struct fm10k_intfc *interface) |
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{ |
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struct net_device *netdev = interface->netdev; |
|
|
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/* only continue if link state is currently up */ |
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if (!netif_carrier_ok(netdev)) |
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return; |
|
|
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netif_info(interface, drv, netdev, "NIC Link is down\n"); |
|
|
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netif_carrier_off(netdev); |
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netif_tx_stop_all_queues(netdev); |
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} |
|
|
|
/** |
|
* fm10k_update_stats - Update the board statistics counters. |
|
* @interface: board private structure |
|
**/ |
|
void fm10k_update_stats(struct fm10k_intfc *interface) |
|
{ |
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struct net_device_stats *net_stats = &interface->netdev->stats; |
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struct fm10k_hw *hw = &interface->hw; |
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u64 hw_csum_tx_good = 0, hw_csum_rx_good = 0, rx_length_errors = 0; |
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u64 rx_switch_errors = 0, rx_drops = 0, rx_pp_errors = 0; |
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u64 rx_link_errors = 0; |
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u64 rx_errors = 0, rx_csum_errors = 0, tx_csum_errors = 0; |
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u64 restart_queue = 0, tx_busy = 0, alloc_failed = 0; |
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u64 rx_bytes_nic = 0, rx_pkts_nic = 0, rx_drops_nic = 0; |
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u64 tx_bytes_nic = 0, tx_pkts_nic = 0; |
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u64 bytes, pkts; |
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int i; |
|
|
|
/* ensure only one thread updates stats at a time */ |
|
if (test_and_set_bit(__FM10K_UPDATING_STATS, interface->state)) |
|
return; |
|
|
|
/* do not allow stats update via service task for next second */ |
|
interface->next_stats_update = jiffies + HZ; |
|
|
|
/* gather some stats to the interface struct that are per queue */ |
|
for (bytes = 0, pkts = 0, i = 0; i < interface->num_tx_queues; i++) { |
|
struct fm10k_ring *tx_ring = READ_ONCE(interface->tx_ring[i]); |
|
|
|
if (!tx_ring) |
|
continue; |
|
|
|
restart_queue += tx_ring->tx_stats.restart_queue; |
|
tx_busy += tx_ring->tx_stats.tx_busy; |
|
tx_csum_errors += tx_ring->tx_stats.csum_err; |
|
bytes += tx_ring->stats.bytes; |
|
pkts += tx_ring->stats.packets; |
|
hw_csum_tx_good += tx_ring->tx_stats.csum_good; |
|
} |
|
|
|
interface->restart_queue = restart_queue; |
|
interface->tx_busy = tx_busy; |
|
net_stats->tx_bytes = bytes; |
|
net_stats->tx_packets = pkts; |
|
interface->tx_csum_errors = tx_csum_errors; |
|
interface->hw_csum_tx_good = hw_csum_tx_good; |
|
|
|
/* gather some stats to the interface struct that are per queue */ |
|
for (bytes = 0, pkts = 0, i = 0; i < interface->num_rx_queues; i++) { |
|
struct fm10k_ring *rx_ring = READ_ONCE(interface->rx_ring[i]); |
|
|
|
if (!rx_ring) |
|
continue; |
|
|
|
bytes += rx_ring->stats.bytes; |
|
pkts += rx_ring->stats.packets; |
|
alloc_failed += rx_ring->rx_stats.alloc_failed; |
|
rx_csum_errors += rx_ring->rx_stats.csum_err; |
|
rx_errors += rx_ring->rx_stats.errors; |
|
hw_csum_rx_good += rx_ring->rx_stats.csum_good; |
|
rx_switch_errors += rx_ring->rx_stats.switch_errors; |
|
rx_drops += rx_ring->rx_stats.drops; |
|
rx_pp_errors += rx_ring->rx_stats.pp_errors; |
|
rx_link_errors += rx_ring->rx_stats.link_errors; |
|
rx_length_errors += rx_ring->rx_stats.length_errors; |
|
} |
|
|
|
net_stats->rx_bytes = bytes; |
|
net_stats->rx_packets = pkts; |
|
interface->alloc_failed = alloc_failed; |
|
interface->rx_csum_errors = rx_csum_errors; |
|
interface->hw_csum_rx_good = hw_csum_rx_good; |
|
interface->rx_switch_errors = rx_switch_errors; |
|
interface->rx_drops = rx_drops; |
|
interface->rx_pp_errors = rx_pp_errors; |
|
interface->rx_link_errors = rx_link_errors; |
|
interface->rx_length_errors = rx_length_errors; |
|
|
|
hw->mac.ops.update_hw_stats(hw, &interface->stats); |
|
|
|
for (i = 0; i < hw->mac.max_queues; i++) { |
|
struct fm10k_hw_stats_q *q = &interface->stats.q[i]; |
|
|
|
tx_bytes_nic += q->tx_bytes.count; |
|
tx_pkts_nic += q->tx_packets.count; |
|
rx_bytes_nic += q->rx_bytes.count; |
|
rx_pkts_nic += q->rx_packets.count; |
|
rx_drops_nic += q->rx_drops.count; |
|
} |
|
|
|
interface->tx_bytes_nic = tx_bytes_nic; |
|
interface->tx_packets_nic = tx_pkts_nic; |
|
interface->rx_bytes_nic = rx_bytes_nic; |
|
interface->rx_packets_nic = rx_pkts_nic; |
|
interface->rx_drops_nic = rx_drops_nic; |
|
|
|
/* Fill out the OS statistics structure */ |
|
net_stats->rx_errors = rx_errors; |
|
net_stats->rx_dropped = interface->stats.nodesc_drop.count; |
|
|
|
/* Update VF statistics */ |
|
fm10k_iov_update_stats(interface); |
|
|
|
clear_bit(__FM10K_UPDATING_STATS, interface->state); |
|
} |
|
|
|
/** |
|
* fm10k_watchdog_flush_tx - flush queues on host not ready |
|
* @interface: pointer to the device interface structure |
|
**/ |
|
static void fm10k_watchdog_flush_tx(struct fm10k_intfc *interface) |
|
{ |
|
int some_tx_pending = 0; |
|
int i; |
|
|
|
/* nothing to do if carrier is up */ |
|
if (netif_carrier_ok(interface->netdev)) |
|
return; |
|
|
|
for (i = 0; i < interface->num_tx_queues; i++) { |
|
struct fm10k_ring *tx_ring = interface->tx_ring[i]; |
|
|
|
if (tx_ring->next_to_use != tx_ring->next_to_clean) { |
|
some_tx_pending = 1; |
|
break; |
|
} |
|
} |
|
|
|
/* We've lost link, so the controller stops DMA, but we've got |
|
* queued Tx work that's never going to get done, so reset |
|
* controller to flush Tx. |
|
*/ |
|
if (some_tx_pending) |
|
set_bit(FM10K_FLAG_RESET_REQUESTED, interface->flags); |
|
} |
|
|
|
/** |
|
* fm10k_watchdog_subtask - check and bring link up |
|
* @interface: pointer to the device interface structure |
|
**/ |
|
static void fm10k_watchdog_subtask(struct fm10k_intfc *interface) |
|
{ |
|
/* if interface is down do nothing */ |
|
if (test_bit(__FM10K_DOWN, interface->state) || |
|
test_bit(__FM10K_RESETTING, interface->state)) |
|
return; |
|
|
|
if (interface->host_ready) |
|
fm10k_watchdog_host_is_ready(interface); |
|
else |
|
fm10k_watchdog_host_not_ready(interface); |
|
|
|
/* update stats only once every second */ |
|
if (time_is_before_jiffies(interface->next_stats_update)) |
|
fm10k_update_stats(interface); |
|
|
|
/* flush any uncompleted work */ |
|
fm10k_watchdog_flush_tx(interface); |
|
} |
|
|
|
/** |
|
* fm10k_check_hang_subtask - check for hung queues and dropped interrupts |
|
* @interface: pointer to the device interface structure |
|
* |
|
* This function serves two purposes. First it strobes the interrupt lines |
|
* in order to make certain interrupts are occurring. Secondly it sets the |
|
* bits needed to check for TX hangs. As a result we should immediately |
|
* determine if a hang has occurred. |
|
*/ |
|
static void fm10k_check_hang_subtask(struct fm10k_intfc *interface) |
|
{ |
|
/* If we're down or resetting, just bail */ |
|
if (test_bit(__FM10K_DOWN, interface->state) || |
|
test_bit(__FM10K_RESETTING, interface->state)) |
|
return; |
|
|
|
/* rate limit tx hang checks to only once every 2 seconds */ |
|
if (time_is_after_eq_jiffies(interface->next_tx_hang_check)) |
|
return; |
|
interface->next_tx_hang_check = jiffies + (2 * HZ); |
|
|
|
if (netif_carrier_ok(interface->netdev)) { |
|
int i; |
|
|
|
/* Force detection of hung controller */ |
|
for (i = 0; i < interface->num_tx_queues; i++) |
|
set_check_for_tx_hang(interface->tx_ring[i]); |
|
|
|
/* Rearm all in-use q_vectors for immediate firing */ |
|
for (i = 0; i < interface->num_q_vectors; i++) { |
|
struct fm10k_q_vector *qv = interface->q_vector[i]; |
|
|
|
if (!qv->tx.count && !qv->rx.count) |
|
continue; |
|
writel(FM10K_ITR_ENABLE | FM10K_ITR_PENDING2, qv->itr); |
|
} |
|
} |
|
} |
|
|
|
/** |
|
* fm10k_service_task - manages and runs subtasks |
|
* @work: pointer to work_struct containing our data |
|
**/ |
|
static void fm10k_service_task(struct work_struct *work) |
|
{ |
|
struct fm10k_intfc *interface; |
|
|
|
interface = container_of(work, struct fm10k_intfc, service_task); |
|
|
|
/* Check whether we're detached first */ |
|
fm10k_detach_subtask(interface); |
|
|
|
/* tasks run even when interface is down */ |
|
fm10k_mbx_subtask(interface); |
|
fm10k_reset_subtask(interface); |
|
|
|
/* tasks only run when interface is up */ |
|
fm10k_watchdog_subtask(interface); |
|
fm10k_check_hang_subtask(interface); |
|
|
|
/* release lock on service events to allow scheduling next event */ |
|
fm10k_service_event_complete(interface); |
|
} |
|
|
|
/** |
|
* fm10k_macvlan_task - send queued MAC/VLAN requests to switch manager |
|
* @work: pointer to work_struct containing our data |
|
* |
|
* This work item handles sending MAC/VLAN updates to the switch manager. When |
|
* the interface is up, it will attempt to queue mailbox messages to the |
|
* switch manager requesting updates for MAC/VLAN pairs. If the Tx fifo of the |
|
* mailbox is full, it will reschedule itself to try again in a short while. |
|
* This ensures that the driver does not overload the switch mailbox with too |
|
* many simultaneous requests, causing an unnecessary reset. |
|
**/ |
|
static void fm10k_macvlan_task(struct work_struct *work) |
|
{ |
|
struct fm10k_macvlan_request *item; |
|
struct fm10k_intfc *interface; |
|
struct delayed_work *dwork; |
|
struct list_head *requests; |
|
struct fm10k_hw *hw; |
|
unsigned long flags; |
|
|
|
dwork = to_delayed_work(work); |
|
interface = container_of(dwork, struct fm10k_intfc, macvlan_task); |
|
hw = &interface->hw; |
|
requests = &interface->macvlan_requests; |
|
|
|
do { |
|
/* Pop the first item off the list */ |
|
spin_lock_irqsave(&interface->macvlan_lock, flags); |
|
item = list_first_entry_or_null(requests, |
|
struct fm10k_macvlan_request, |
|
list); |
|
if (item) |
|
list_del_init(&item->list); |
|
|
|
spin_unlock_irqrestore(&interface->macvlan_lock, flags); |
|
|
|
/* We have no more items to process */ |
|
if (!item) |
|
goto done; |
|
|
|
fm10k_mbx_lock(interface); |
|
|
|
/* Check that we have plenty of space to send the message. We |
|
* want to ensure that the mailbox stays low enough to avoid a |
|
* change in the host state, otherwise we may see spurious |
|
* link up / link down notifications. |
|
*/ |
|
if (!hw->mbx.ops.tx_ready(&hw->mbx, FM10K_VFMBX_MSG_MTU + 5)) { |
|
hw->mbx.ops.process(hw, &hw->mbx); |
|
set_bit(__FM10K_MACVLAN_REQUEST, interface->state); |
|
fm10k_mbx_unlock(interface); |
|
|
|
/* Put the request back on the list */ |
|
spin_lock_irqsave(&interface->macvlan_lock, flags); |
|
list_add(&item->list, requests); |
|
spin_unlock_irqrestore(&interface->macvlan_lock, flags); |
|
break; |
|
} |
|
|
|
switch (item->type) { |
|
case FM10K_MC_MAC_REQUEST: |
|
hw->mac.ops.update_mc_addr(hw, |
|
item->mac.glort, |
|
item->mac.addr, |
|
item->mac.vid, |
|
item->set); |
|
break; |
|
case FM10K_UC_MAC_REQUEST: |
|
hw->mac.ops.update_uc_addr(hw, |
|
item->mac.glort, |
|
item->mac.addr, |
|
item->mac.vid, |
|
item->set, |
|
0); |
|
break; |
|
case FM10K_VLAN_REQUEST: |
|
hw->mac.ops.update_vlan(hw, |
|
item->vlan.vid, |
|
item->vlan.vsi, |
|
item->set); |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
fm10k_mbx_unlock(interface); |
|
|
|
/* Free the item now that we've sent the update */ |
|
kfree(item); |
|
} while (true); |
|
|
|
done: |
|
WARN_ON(!test_bit(__FM10K_MACVLAN_SCHED, interface->state)); |
|
|
|
/* flush memory to make sure state is correct */ |
|
smp_mb__before_atomic(); |
|
clear_bit(__FM10K_MACVLAN_SCHED, interface->state); |
|
|
|
/* If a MAC/VLAN request was scheduled since we started, we should |
|
* re-schedule. However, there is no reason to re-schedule if there is |
|
* no work to do. |
|
*/ |
|
if (test_bit(__FM10K_MACVLAN_REQUEST, interface->state)) |
|
fm10k_macvlan_schedule(interface); |
|
} |
|
|
|
/** |
|
* fm10k_configure_tx_ring - Configure Tx ring after Reset |
|
* @interface: board private structure |
|
* @ring: structure containing ring specific data |
|
* |
|
* Configure the Tx descriptor ring after a reset. |
|
**/ |
|
static void fm10k_configure_tx_ring(struct fm10k_intfc *interface, |
|
struct fm10k_ring *ring) |
|
{ |
|
struct fm10k_hw *hw = &interface->hw; |
|
u64 tdba = ring->dma; |
|
u32 size = ring->count * sizeof(struct fm10k_tx_desc); |
|
u32 txint = FM10K_INT_MAP_DISABLE; |
|
u32 txdctl = BIT(FM10K_TXDCTL_MAX_TIME_SHIFT) | FM10K_TXDCTL_ENABLE; |
|
u8 reg_idx = ring->reg_idx; |
|
|
|
/* disable queue to avoid issues while updating state */ |
|
fm10k_write_reg(hw, FM10K_TXDCTL(reg_idx), 0); |
|
fm10k_write_flush(hw); |
|
|
|
/* possible poll here to verify ring resources have been cleaned */ |
|
|
|
/* set location and size for descriptor ring */ |
|
fm10k_write_reg(hw, FM10K_TDBAL(reg_idx), tdba & DMA_BIT_MASK(32)); |
|
fm10k_write_reg(hw, FM10K_TDBAH(reg_idx), tdba >> 32); |
|
fm10k_write_reg(hw, FM10K_TDLEN(reg_idx), size); |
|
|
|
/* reset head and tail pointers */ |
|
fm10k_write_reg(hw, FM10K_TDH(reg_idx), 0); |
|
fm10k_write_reg(hw, FM10K_TDT(reg_idx), 0); |
|
|
|
/* store tail pointer */ |
|
ring->tail = &interface->uc_addr[FM10K_TDT(reg_idx)]; |
|
|
|
/* reset ntu and ntc to place SW in sync with hardware */ |
|
ring->next_to_clean = 0; |
|
ring->next_to_use = 0; |
|
|
|
/* Map interrupt */ |
|
if (ring->q_vector) { |
|
txint = ring->q_vector->v_idx + NON_Q_VECTORS; |
|
txint |= FM10K_INT_MAP_TIMER0; |
|
} |
|
|
|
fm10k_write_reg(hw, FM10K_TXINT(reg_idx), txint); |
|
|
|
/* enable use of FTAG bit in Tx descriptor, register is RO for VF */ |
|
fm10k_write_reg(hw, FM10K_PFVTCTL(reg_idx), |
|
FM10K_PFVTCTL_FTAG_DESC_ENABLE); |
|
|
|
/* Initialize XPS */ |
|
if (!test_and_set_bit(__FM10K_TX_XPS_INIT_DONE, ring->state) && |
|
ring->q_vector) |
|
netif_set_xps_queue(ring->netdev, |
|
&ring->q_vector->affinity_mask, |
|
ring->queue_index); |
|
|
|
/* enable queue */ |
|
fm10k_write_reg(hw, FM10K_TXDCTL(reg_idx), txdctl); |
|
} |
|
|
|
/** |
|
* fm10k_enable_tx_ring - Verify Tx ring is enabled after configuration |
|
* @interface: board private structure |
|
* @ring: structure containing ring specific data |
|
* |
|
* Verify the Tx descriptor ring is ready for transmit. |
|
**/ |
|
static void fm10k_enable_tx_ring(struct fm10k_intfc *interface, |
|
struct fm10k_ring *ring) |
|
{ |
|
struct fm10k_hw *hw = &interface->hw; |
|
int wait_loop = 10; |
|
u32 txdctl; |
|
u8 reg_idx = ring->reg_idx; |
|
|
|
/* if we are already enabled just exit */ |
|
if (fm10k_read_reg(hw, FM10K_TXDCTL(reg_idx)) & FM10K_TXDCTL_ENABLE) |
|
return; |
|
|
|
/* poll to verify queue is enabled */ |
|
do { |
|
usleep_range(1000, 2000); |
|
txdctl = fm10k_read_reg(hw, FM10K_TXDCTL(reg_idx)); |
|
} while (!(txdctl & FM10K_TXDCTL_ENABLE) && --wait_loop); |
|
if (!wait_loop) |
|
netif_err(interface, drv, interface->netdev, |
|
"Could not enable Tx Queue %d\n", reg_idx); |
|
} |
|
|
|
/** |
|
* fm10k_configure_tx - Configure Transmit Unit after Reset |
|
* @interface: board private structure |
|
* |
|
* Configure the Tx unit of the MAC after a reset. |
|
**/ |
|
static void fm10k_configure_tx(struct fm10k_intfc *interface) |
|
{ |
|
int i; |
|
|
|
/* Setup the HW Tx Head and Tail descriptor pointers */ |
|
for (i = 0; i < interface->num_tx_queues; i++) |
|
fm10k_configure_tx_ring(interface, interface->tx_ring[i]); |
|
|
|
/* poll here to verify that Tx rings are now enabled */ |
|
for (i = 0; i < interface->num_tx_queues; i++) |
|
fm10k_enable_tx_ring(interface, interface->tx_ring[i]); |
|
} |
|
|
|
/** |
|
* fm10k_configure_rx_ring - Configure Rx ring after Reset |
|
* @interface: board private structure |
|
* @ring: structure containing ring specific data |
|
* |
|
* Configure the Rx descriptor ring after a reset. |
|
**/ |
|
static void fm10k_configure_rx_ring(struct fm10k_intfc *interface, |
|
struct fm10k_ring *ring) |
|
{ |
|
u64 rdba = ring->dma; |
|
struct fm10k_hw *hw = &interface->hw; |
|
u32 size = ring->count * sizeof(union fm10k_rx_desc); |
|
u32 rxqctl, rxdctl = FM10K_RXDCTL_WRITE_BACK_MIN_DELAY; |
|
u32 srrctl = FM10K_SRRCTL_BUFFER_CHAINING_EN; |
|
u32 rxint = FM10K_INT_MAP_DISABLE; |
|
u8 rx_pause = interface->rx_pause; |
|
u8 reg_idx = ring->reg_idx; |
|
|
|
/* disable queue to avoid issues while updating state */ |
|
rxqctl = fm10k_read_reg(hw, FM10K_RXQCTL(reg_idx)); |
|
rxqctl &= ~FM10K_RXQCTL_ENABLE; |
|
fm10k_write_reg(hw, FM10K_RXQCTL(reg_idx), rxqctl); |
|
fm10k_write_flush(hw); |
|
|
|
/* possible poll here to verify ring resources have been cleaned */ |
|
|
|
/* set location and size for descriptor ring */ |
|
fm10k_write_reg(hw, FM10K_RDBAL(reg_idx), rdba & DMA_BIT_MASK(32)); |
|
fm10k_write_reg(hw, FM10K_RDBAH(reg_idx), rdba >> 32); |
|
fm10k_write_reg(hw, FM10K_RDLEN(reg_idx), size); |
|
|
|
/* reset head and tail pointers */ |
|
fm10k_write_reg(hw, FM10K_RDH(reg_idx), 0); |
|
fm10k_write_reg(hw, FM10K_RDT(reg_idx), 0); |
|
|
|
/* store tail pointer */ |
|
ring->tail = &interface->uc_addr[FM10K_RDT(reg_idx)]; |
|
|
|
/* reset ntu and ntc to place SW in sync with hardware */ |
|
ring->next_to_clean = 0; |
|
ring->next_to_use = 0; |
|
ring->next_to_alloc = 0; |
|
|
|
/* Configure the Rx buffer size for one buff without split */ |
|
srrctl |= FM10K_RX_BUFSZ >> FM10K_SRRCTL_BSIZEPKT_SHIFT; |
|
|
|
/* Configure the Rx ring to suppress loopback packets */ |
|
srrctl |= FM10K_SRRCTL_LOOPBACK_SUPPRESS; |
|
fm10k_write_reg(hw, FM10K_SRRCTL(reg_idx), srrctl); |
|
|
|
/* Enable drop on empty */ |
|
#ifdef CONFIG_DCB |
|
if (interface->pfc_en) |
|
rx_pause = interface->pfc_en; |
|
#endif |
|
if (!(rx_pause & BIT(ring->qos_pc))) |
|
rxdctl |= FM10K_RXDCTL_DROP_ON_EMPTY; |
|
|
|
fm10k_write_reg(hw, FM10K_RXDCTL(reg_idx), rxdctl); |
|
|
|
/* assign default VLAN to queue */ |
|
ring->vid = hw->mac.default_vid; |
|
|
|
/* if we have an active VLAN, disable default VLAN ID */ |
|
if (test_bit(hw->mac.default_vid, interface->active_vlans)) |
|
ring->vid |= FM10K_VLAN_CLEAR; |
|
|
|
/* Map interrupt */ |
|
if (ring->q_vector) { |
|
rxint = ring->q_vector->v_idx + NON_Q_VECTORS; |
|
rxint |= FM10K_INT_MAP_TIMER1; |
|
} |
|
|
|
fm10k_write_reg(hw, FM10K_RXINT(reg_idx), rxint); |
|
|
|
/* enable queue */ |
|
rxqctl = fm10k_read_reg(hw, FM10K_RXQCTL(reg_idx)); |
|
rxqctl |= FM10K_RXQCTL_ENABLE; |
|
fm10k_write_reg(hw, FM10K_RXQCTL(reg_idx), rxqctl); |
|
|
|
/* place buffers on ring for receive data */ |
|
fm10k_alloc_rx_buffers(ring, fm10k_desc_unused(ring)); |
|
} |
|
|
|
/** |
|
* fm10k_update_rx_drop_en - Configures the drop enable bits for Rx rings |
|
* @interface: board private structure |
|
* |
|
* Configure the drop enable bits for the Rx rings. |
|
**/ |
|
void fm10k_update_rx_drop_en(struct fm10k_intfc *interface) |
|
{ |
|
struct fm10k_hw *hw = &interface->hw; |
|
u8 rx_pause = interface->rx_pause; |
|
int i; |
|
|
|
#ifdef CONFIG_DCB |
|
if (interface->pfc_en) |
|
rx_pause = interface->pfc_en; |
|
|
|
#endif |
|
for (i = 0; i < interface->num_rx_queues; i++) { |
|
struct fm10k_ring *ring = interface->rx_ring[i]; |
|
u32 rxdctl = FM10K_RXDCTL_WRITE_BACK_MIN_DELAY; |
|
u8 reg_idx = ring->reg_idx; |
|
|
|
if (!(rx_pause & BIT(ring->qos_pc))) |
|
rxdctl |= FM10K_RXDCTL_DROP_ON_EMPTY; |
|
|
|
fm10k_write_reg(hw, FM10K_RXDCTL(reg_idx), rxdctl); |
|
} |
|
} |
|
|
|
/** |
|
* fm10k_configure_dglort - Configure Receive DGLORT after reset |
|
* @interface: board private structure |
|
* |
|
* Configure the DGLORT description and RSS tables. |
|
**/ |
|
static void fm10k_configure_dglort(struct fm10k_intfc *interface) |
|
{ |
|
struct fm10k_dglort_cfg dglort = { 0 }; |
|
struct fm10k_hw *hw = &interface->hw; |
|
int i; |
|
u32 mrqc; |
|
|
|
/* Fill out hash function seeds */ |
|
for (i = 0; i < FM10K_RSSRK_SIZE; i++) |
|
fm10k_write_reg(hw, FM10K_RSSRK(0, i), interface->rssrk[i]); |
|
|
|
/* Write RETA table to hardware */ |
|
for (i = 0; i < FM10K_RETA_SIZE; i++) |
|
fm10k_write_reg(hw, FM10K_RETA(0, i), interface->reta[i]); |
|
|
|
/* Generate RSS hash based on packet types, TCP/UDP |
|
* port numbers and/or IPv4/v6 src and dst addresses |
|
*/ |
|
mrqc = FM10K_MRQC_IPV4 | |
|
FM10K_MRQC_TCP_IPV4 | |
|
FM10K_MRQC_IPV6 | |
|
FM10K_MRQC_TCP_IPV6; |
|
|
|
if (test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, interface->flags)) |
|
mrqc |= FM10K_MRQC_UDP_IPV4; |
|
if (test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, interface->flags)) |
|
mrqc |= FM10K_MRQC_UDP_IPV6; |
|
|
|
fm10k_write_reg(hw, FM10K_MRQC(0), mrqc); |
|
|
|
/* configure default DGLORT mapping for RSS/DCB */ |
|
dglort.inner_rss = 1; |
|
dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask); |
|
dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask); |
|
hw->mac.ops.configure_dglort_map(hw, &dglort); |
|
|
|
/* assign GLORT per queue for queue mapped testing */ |
|
if (interface->glort_count > 64) { |
|
memset(&dglort, 0, sizeof(dglort)); |
|
dglort.inner_rss = 1; |
|
dglort.glort = interface->glort + 64; |
|
dglort.idx = fm10k_dglort_pf_queue; |
|
dglort.queue_l = fls(interface->num_rx_queues - 1); |
|
hw->mac.ops.configure_dglort_map(hw, &dglort); |
|
} |
|
|
|
/* assign glort value for RSS/DCB specific to this interface */ |
|
memset(&dglort, 0, sizeof(dglort)); |
|
dglort.inner_rss = 1; |
|
dglort.glort = interface->glort; |
|
dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask); |
|
dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask); |
|
/* configure DGLORT mapping for RSS/DCB */ |
|
dglort.idx = fm10k_dglort_pf_rss; |
|
if (interface->l2_accel) |
|
dglort.shared_l = fls(interface->l2_accel->size); |
|
hw->mac.ops.configure_dglort_map(hw, &dglort); |
|
} |
|
|
|
/** |
|
* fm10k_configure_rx - Configure Receive Unit after Reset |
|
* @interface: board private structure |
|
* |
|
* Configure the Rx unit of the MAC after a reset. |
|
**/ |
|
static void fm10k_configure_rx(struct fm10k_intfc *interface) |
|
{ |
|
int i; |
|
|
|
/* Configure SWPRI to PC map */ |
|
fm10k_configure_swpri_map(interface); |
|
|
|
/* Configure RSS and DGLORT map */ |
|
fm10k_configure_dglort(interface); |
|
|
|
/* Setup the HW Rx Head and Tail descriptor pointers */ |
|
for (i = 0; i < interface->num_rx_queues; i++) |
|
fm10k_configure_rx_ring(interface, interface->rx_ring[i]); |
|
|
|
/* possible poll here to verify that Rx rings are now enabled */ |
|
} |
|
|
|
static void fm10k_napi_enable_all(struct fm10k_intfc *interface) |
|
{ |
|
struct fm10k_q_vector *q_vector; |
|
int q_idx; |
|
|
|
for (q_idx = 0; q_idx < interface->num_q_vectors; q_idx++) { |
|
q_vector = interface->q_vector[q_idx]; |
|
napi_enable(&q_vector->napi); |
|
} |
|
} |
|
|
|
static irqreturn_t fm10k_msix_clean_rings(int __always_unused irq, void *data) |
|
{ |
|
struct fm10k_q_vector *q_vector = data; |
|
|
|
if (q_vector->rx.count || q_vector->tx.count) |
|
napi_schedule_irqoff(&q_vector->napi); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
static irqreturn_t fm10k_msix_mbx_vf(int __always_unused irq, void *data) |
|
{ |
|
struct fm10k_intfc *interface = data; |
|
struct fm10k_hw *hw = &interface->hw; |
|
struct fm10k_mbx_info *mbx = &hw->mbx; |
|
|
|
/* re-enable mailbox interrupt and indicate 20us delay */ |
|
fm10k_write_reg(hw, FM10K_VFITR(FM10K_MBX_VECTOR), |
|
(FM10K_MBX_INT_DELAY >> hw->mac.itr_scale) | |
|
FM10K_ITR_ENABLE); |
|
|
|
/* service upstream mailbox */ |
|
if (fm10k_mbx_trylock(interface)) { |
|
mbx->ops.process(hw, mbx); |
|
fm10k_mbx_unlock(interface); |
|
} |
|
|
|
hw->mac.get_host_state = true; |
|
fm10k_service_event_schedule(interface); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
#define FM10K_ERR_MSG(type) case (type): error = #type; break |
|
static void fm10k_handle_fault(struct fm10k_intfc *interface, int type, |
|
struct fm10k_fault *fault) |
|
{ |
|
struct pci_dev *pdev = interface->pdev; |
|
struct fm10k_hw *hw = &interface->hw; |
|
struct fm10k_iov_data *iov_data = interface->iov_data; |
|
char *error; |
|
|
|
switch (type) { |
|
case FM10K_PCA_FAULT: |
|
switch (fault->type) { |
|
default: |
|
error = "Unknown PCA error"; |
|
break; |
|
FM10K_ERR_MSG(PCA_NO_FAULT); |
|
FM10K_ERR_MSG(PCA_UNMAPPED_ADDR); |
|
FM10K_ERR_MSG(PCA_BAD_QACCESS_PF); |
|
FM10K_ERR_MSG(PCA_BAD_QACCESS_VF); |
|
FM10K_ERR_MSG(PCA_MALICIOUS_REQ); |
|
FM10K_ERR_MSG(PCA_POISONED_TLP); |
|
FM10K_ERR_MSG(PCA_TLP_ABORT); |
|
} |
|
break; |
|
case FM10K_THI_FAULT: |
|
switch (fault->type) { |
|
default: |
|
error = "Unknown THI error"; |
|
break; |
|
FM10K_ERR_MSG(THI_NO_FAULT); |
|
FM10K_ERR_MSG(THI_MAL_DIS_Q_FAULT); |
|
} |
|
break; |
|
case FM10K_FUM_FAULT: |
|
switch (fault->type) { |
|
default: |
|
error = "Unknown FUM error"; |
|
break; |
|
FM10K_ERR_MSG(FUM_NO_FAULT); |
|
FM10K_ERR_MSG(FUM_UNMAPPED_ADDR); |
|
FM10K_ERR_MSG(FUM_BAD_VF_QACCESS); |
|
FM10K_ERR_MSG(FUM_ADD_DECODE_ERR); |
|
FM10K_ERR_MSG(FUM_RO_ERROR); |
|
FM10K_ERR_MSG(FUM_QPRC_CRC_ERROR); |
|
FM10K_ERR_MSG(FUM_CSR_TIMEOUT); |
|
FM10K_ERR_MSG(FUM_INVALID_TYPE); |
|
FM10K_ERR_MSG(FUM_INVALID_LENGTH); |
|
FM10K_ERR_MSG(FUM_INVALID_BE); |
|
FM10K_ERR_MSG(FUM_INVALID_ALIGN); |
|
} |
|
break; |
|
default: |
|
error = "Undocumented fault"; |
|
break; |
|
} |
|
|
|
dev_warn(&pdev->dev, |
|
"%s Address: 0x%llx SpecInfo: 0x%x Func: %02x.%0x\n", |
|
error, fault->address, fault->specinfo, |
|
PCI_SLOT(fault->func), PCI_FUNC(fault->func)); |
|
|
|
/* For VF faults, clear out the respective LPORT, reset the queue |
|
* resources, and then reconnect to the mailbox. This allows the |
|
* VF in question to resume behavior. For transient faults that are |
|
* the result of non-malicious behavior this will log the fault and |
|
* allow the VF to resume functionality. Obviously for malicious VFs |
|
* they will be able to attempt malicious behavior again. In this |
|
* case, the system administrator will need to step in and manually |
|
* remove or disable the VF in question. |
|
*/ |
|
if (fault->func && iov_data) { |
|
int vf = fault->func - 1; |
|
struct fm10k_vf_info *vf_info = &iov_data->vf_info[vf]; |
|
|
|
hw->iov.ops.reset_lport(hw, vf_info); |
|
hw->iov.ops.reset_resources(hw, vf_info); |
|
|
|
/* reset_lport disables the VF, so re-enable it */ |
|
hw->iov.ops.set_lport(hw, vf_info, vf, |
|
FM10K_VF_FLAG_MULTI_CAPABLE); |
|
|
|
/* reset_resources will disconnect from the mbx */ |
|
vf_info->mbx.ops.connect(hw, &vf_info->mbx); |
|
} |
|
} |
|
|
|
static void fm10k_report_fault(struct fm10k_intfc *interface, u32 eicr) |
|
{ |
|
struct fm10k_hw *hw = &interface->hw; |
|
struct fm10k_fault fault = { 0 }; |
|
int type, err; |
|
|
|
for (eicr &= FM10K_EICR_FAULT_MASK, type = FM10K_PCA_FAULT; |
|
eicr; |
|
eicr >>= 1, type += FM10K_FAULT_SIZE) { |
|
/* only check if there is an error reported */ |
|
if (!(eicr & 0x1)) |
|
continue; |
|
|
|
/* retrieve fault info */ |
|
err = hw->mac.ops.get_fault(hw, type, &fault); |
|
if (err) { |
|
dev_err(&interface->pdev->dev, |
|
"error reading fault\n"); |
|
continue; |
|
} |
|
|
|
fm10k_handle_fault(interface, type, &fault); |
|
} |
|
} |
|
|
|
static void fm10k_reset_drop_on_empty(struct fm10k_intfc *interface, u32 eicr) |
|
{ |
|
struct fm10k_hw *hw = &interface->hw; |
|
const u32 rxdctl = FM10K_RXDCTL_WRITE_BACK_MIN_DELAY; |
|
u32 maxholdq; |
|
int q; |
|
|
|
if (!(eicr & FM10K_EICR_MAXHOLDTIME)) |
|
return; |
|
|
|
maxholdq = fm10k_read_reg(hw, FM10K_MAXHOLDQ(7)); |
|
if (maxholdq) |
|
fm10k_write_reg(hw, FM10K_MAXHOLDQ(7), maxholdq); |
|
for (q = 255;;) { |
|
if (maxholdq & BIT(31)) { |
|
if (q < FM10K_MAX_QUEUES_PF) { |
|
interface->rx_overrun_pf++; |
|
fm10k_write_reg(hw, FM10K_RXDCTL(q), rxdctl); |
|
} else { |
|
interface->rx_overrun_vf++; |
|
} |
|
} |
|
|
|
maxholdq *= 2; |
|
if (!maxholdq) |
|
q &= ~(32 - 1); |
|
|
|
if (!q) |
|
break; |
|
|
|
if (q-- % 32) |
|
continue; |
|
|
|
maxholdq = fm10k_read_reg(hw, FM10K_MAXHOLDQ(q / 32)); |
|
if (maxholdq) |
|
fm10k_write_reg(hw, FM10K_MAXHOLDQ(q / 32), maxholdq); |
|
} |
|
} |
|
|
|
static irqreturn_t fm10k_msix_mbx_pf(int __always_unused irq, void *data) |
|
{ |
|
struct fm10k_intfc *interface = data; |
|
struct fm10k_hw *hw = &interface->hw; |
|
struct fm10k_mbx_info *mbx = &hw->mbx; |
|
u32 eicr; |
|
|
|
/* unmask any set bits related to this interrupt */ |
|
eicr = fm10k_read_reg(hw, FM10K_EICR); |
|
fm10k_write_reg(hw, FM10K_EICR, eicr & (FM10K_EICR_MAILBOX | |
|
FM10K_EICR_SWITCHREADY | |
|
FM10K_EICR_SWITCHNOTREADY)); |
|
|
|
/* report any faults found to the message log */ |
|
fm10k_report_fault(interface, eicr); |
|
|
|
/* reset any queues disabled due to receiver overrun */ |
|
fm10k_reset_drop_on_empty(interface, eicr); |
|
|
|
/* service mailboxes */ |
|
if (fm10k_mbx_trylock(interface)) { |
|
s32 err = mbx->ops.process(hw, mbx); |
|
|
|
if (err == FM10K_ERR_RESET_REQUESTED) |
|
set_bit(FM10K_FLAG_RESET_REQUESTED, interface->flags); |
|
|
|
/* handle VFLRE events */ |
|
fm10k_iov_event(interface); |
|
fm10k_mbx_unlock(interface); |
|
} |
|
|
|
/* if switch toggled state we should reset GLORTs */ |
|
if (eicr & FM10K_EICR_SWITCHNOTREADY) { |
|
/* force link down for at least 4 seconds */ |
|
interface->link_down_event = jiffies + (4 * HZ); |
|
set_bit(__FM10K_LINK_DOWN, interface->state); |
|
|
|
/* reset dglort_map back to no config */ |
|
hw->mac.dglort_map = FM10K_DGLORTMAP_NONE; |
|
} |
|
|
|
/* we should validate host state after interrupt event */ |
|
hw->mac.get_host_state = true; |
|
|
|
/* validate host state, and handle VF mailboxes in the service task */ |
|
fm10k_service_event_schedule(interface); |
|
|
|
/* re-enable mailbox interrupt and indicate 20us delay */ |
|
fm10k_write_reg(hw, FM10K_ITR(FM10K_MBX_VECTOR), |
|
(FM10K_MBX_INT_DELAY >> hw->mac.itr_scale) | |
|
FM10K_ITR_ENABLE); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
void fm10k_mbx_free_irq(struct fm10k_intfc *interface) |
|
{ |
|
struct fm10k_hw *hw = &interface->hw; |
|
struct msix_entry *entry; |
|
int itr_reg; |
|
|
|
/* no mailbox IRQ to free if MSI-X is not enabled */ |
|
if (!interface->msix_entries) |
|
return; |
|
|
|
entry = &interface->msix_entries[FM10K_MBX_VECTOR]; |
|
|
|
/* disconnect the mailbox */ |
|
hw->mbx.ops.disconnect(hw, &hw->mbx); |
|
|
|
/* disable Mailbox cause */ |
|
if (hw->mac.type == fm10k_mac_pf) { |
|
fm10k_write_reg(hw, FM10K_EIMR, |
|
FM10K_EIMR_DISABLE(PCA_FAULT) | |
|
FM10K_EIMR_DISABLE(FUM_FAULT) | |
|
FM10K_EIMR_DISABLE(MAILBOX) | |
|
FM10K_EIMR_DISABLE(SWITCHREADY) | |
|
FM10K_EIMR_DISABLE(SWITCHNOTREADY) | |
|
FM10K_EIMR_DISABLE(SRAMERROR) | |
|
FM10K_EIMR_DISABLE(VFLR) | |
|
FM10K_EIMR_DISABLE(MAXHOLDTIME)); |
|
itr_reg = FM10K_ITR(FM10K_MBX_VECTOR); |
|
} else { |
|
itr_reg = FM10K_VFITR(FM10K_MBX_VECTOR); |
|
} |
|
|
|
fm10k_write_reg(hw, itr_reg, FM10K_ITR_MASK_SET); |
|
|
|
free_irq(entry->vector, interface); |
|
} |
|
|
|
static s32 fm10k_mbx_mac_addr(struct fm10k_hw *hw, u32 **results, |
|
struct fm10k_mbx_info *mbx) |
|
{ |
|
bool vlan_override = hw->mac.vlan_override; |
|
u16 default_vid = hw->mac.default_vid; |
|
struct fm10k_intfc *interface; |
|
s32 err; |
|
|
|
err = fm10k_msg_mac_vlan_vf(hw, results, mbx); |
|
if (err) |
|
return err; |
|
|
|
interface = container_of(hw, struct fm10k_intfc, hw); |
|
|
|
/* MAC was changed so we need reset */ |
|
if (is_valid_ether_addr(hw->mac.perm_addr) && |
|
!ether_addr_equal(hw->mac.perm_addr, hw->mac.addr)) |
|
set_bit(FM10K_FLAG_RESET_REQUESTED, interface->flags); |
|
|
|
/* VLAN override was changed, or default VLAN changed */ |
|
if ((vlan_override != hw->mac.vlan_override) || |
|
(default_vid != hw->mac.default_vid)) |
|
set_bit(FM10K_FLAG_RESET_REQUESTED, interface->flags); |
|
|
|
return 0; |
|
} |
|
|
|
/* generic error handler for mailbox issues */ |
|
static s32 fm10k_mbx_error(struct fm10k_hw *hw, u32 **results, |
|
struct fm10k_mbx_info __always_unused *mbx) |
|
{ |
|
struct fm10k_intfc *interface; |
|
struct pci_dev *pdev; |
|
|
|
interface = container_of(hw, struct fm10k_intfc, hw); |
|
pdev = interface->pdev; |
|
|
|
dev_err(&pdev->dev, "Unknown message ID %u\n", |
|
**results & FM10K_TLV_ID_MASK); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct fm10k_msg_data vf_mbx_data[] = { |
|
FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test), |
|
FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_mbx_mac_addr), |
|
FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf), |
|
FM10K_TLV_MSG_ERROR_HANDLER(fm10k_mbx_error), |
|
}; |
|
|
|
static int fm10k_mbx_request_irq_vf(struct fm10k_intfc *interface) |
|
{ |
|
struct msix_entry *entry = &interface->msix_entries[FM10K_MBX_VECTOR]; |
|
struct net_device *dev = interface->netdev; |
|
struct fm10k_hw *hw = &interface->hw; |
|
int err; |
|
|
|
/* Use timer0 for interrupt moderation on the mailbox */ |
|
u32 itr = entry->entry | FM10K_INT_MAP_TIMER0; |
|
|
|
/* register mailbox handlers */ |
|
err = hw->mbx.ops.register_handlers(&hw->mbx, vf_mbx_data); |
|
if (err) |
|
return err; |
|
|
|
/* request the IRQ */ |
|
err = request_irq(entry->vector, fm10k_msix_mbx_vf, 0, |
|
dev->name, interface); |
|
if (err) { |
|
netif_err(interface, probe, dev, |
|
"request_irq for msix_mbx failed: %d\n", err); |
|
return err; |
|
} |
|
|
|
/* map all of the interrupt sources */ |
|
fm10k_write_reg(hw, FM10K_VFINT_MAP, itr); |
|
|
|
/* enable interrupt */ |
|
fm10k_write_reg(hw, FM10K_VFITR(entry->entry), FM10K_ITR_ENABLE); |
|
|
|
return 0; |
|
} |
|
|
|
static s32 fm10k_lport_map(struct fm10k_hw *hw, u32 **results, |
|
struct fm10k_mbx_info *mbx) |
|
{ |
|
struct fm10k_intfc *interface; |
|
u32 dglort_map = hw->mac.dglort_map; |
|
s32 err; |
|
|
|
interface = container_of(hw, struct fm10k_intfc, hw); |
|
|
|
err = fm10k_msg_err_pf(hw, results, mbx); |
|
if (!err && hw->swapi.status) { |
|
/* force link down for a reasonable delay */ |
|
interface->link_down_event = jiffies + (2 * HZ); |
|
set_bit(__FM10K_LINK_DOWN, interface->state); |
|
|
|
/* reset dglort_map back to no config */ |
|
hw->mac.dglort_map = FM10K_DGLORTMAP_NONE; |
|
|
|
fm10k_service_event_schedule(interface); |
|
|
|
/* prevent overloading kernel message buffer */ |
|
if (interface->lport_map_failed) |
|
return 0; |
|
|
|
interface->lport_map_failed = true; |
|
|
|
if (hw->swapi.status == FM10K_MSG_ERR_PEP_NOT_SCHEDULED) |
|
dev_warn(&interface->pdev->dev, |
|
"cannot obtain link because the host interface is configured for a PCIe host interface bandwidth of zero\n"); |
|
dev_warn(&interface->pdev->dev, |
|
"request logical port map failed: %d\n", |
|
hw->swapi.status); |
|
|
|
return 0; |
|
} |
|
|
|
err = fm10k_msg_lport_map_pf(hw, results, mbx); |
|
if (err) |
|
return err; |
|
|
|
interface->lport_map_failed = false; |
|
|
|
/* we need to reset if port count was just updated */ |
|
if (dglort_map != hw->mac.dglort_map) |
|
set_bit(FM10K_FLAG_RESET_REQUESTED, interface->flags); |
|
|
|
return 0; |
|
} |
|
|
|
static s32 fm10k_update_pvid(struct fm10k_hw *hw, u32 **results, |
|
struct fm10k_mbx_info __always_unused *mbx) |
|
{ |
|
struct fm10k_intfc *interface; |
|
u16 glort, pvid; |
|
u32 pvid_update; |
|
s32 err; |
|
|
|
err = fm10k_tlv_attr_get_u32(results[FM10K_PF_ATTR_ID_UPDATE_PVID], |
|
&pvid_update); |
|
if (err) |
|
return err; |
|
|
|
/* extract values from the pvid update */ |
|
glort = FM10K_MSG_HDR_FIELD_GET(pvid_update, UPDATE_PVID_GLORT); |
|
pvid = FM10K_MSG_HDR_FIELD_GET(pvid_update, UPDATE_PVID_PVID); |
|
|
|
/* if glort is not valid return error */ |
|
if (!fm10k_glort_valid_pf(hw, glort)) |
|
return FM10K_ERR_PARAM; |
|
|
|
/* verify VLAN ID is valid */ |
|
if (pvid >= FM10K_VLAN_TABLE_VID_MAX) |
|
return FM10K_ERR_PARAM; |
|
|
|
interface = container_of(hw, struct fm10k_intfc, hw); |
|
|
|
/* check to see if this belongs to one of the VFs */ |
|
err = fm10k_iov_update_pvid(interface, glort, pvid); |
|
if (!err) |
|
return 0; |
|
|
|
/* we need to reset if default VLAN was just updated */ |
|
if (pvid != hw->mac.default_vid) |
|
set_bit(FM10K_FLAG_RESET_REQUESTED, interface->flags); |
|
|
|
hw->mac.default_vid = pvid; |
|
|
|
return 0; |
|
} |
|
|
|
static const struct fm10k_msg_data pf_mbx_data[] = { |
|
FM10K_PF_MSG_ERR_HANDLER(XCAST_MODES, fm10k_msg_err_pf), |
|
FM10K_PF_MSG_ERR_HANDLER(UPDATE_MAC_FWD_RULE, fm10k_msg_err_pf), |
|
FM10K_PF_MSG_LPORT_MAP_HANDLER(fm10k_lport_map), |
|
FM10K_PF_MSG_ERR_HANDLER(LPORT_CREATE, fm10k_msg_err_pf), |
|
FM10K_PF_MSG_ERR_HANDLER(LPORT_DELETE, fm10k_msg_err_pf), |
|
FM10K_PF_MSG_UPDATE_PVID_HANDLER(fm10k_update_pvid), |
|
FM10K_TLV_MSG_ERROR_HANDLER(fm10k_mbx_error), |
|
}; |
|
|
|
static int fm10k_mbx_request_irq_pf(struct fm10k_intfc *interface) |
|
{ |
|
struct msix_entry *entry = &interface->msix_entries[FM10K_MBX_VECTOR]; |
|
struct net_device *dev = interface->netdev; |
|
struct fm10k_hw *hw = &interface->hw; |
|
int err; |
|
|
|
/* Use timer0 for interrupt moderation on the mailbox */ |
|
u32 mbx_itr = entry->entry | FM10K_INT_MAP_TIMER0; |
|
u32 other_itr = entry->entry | FM10K_INT_MAP_IMMEDIATE; |
|
|
|
/* register mailbox handlers */ |
|
err = hw->mbx.ops.register_handlers(&hw->mbx, pf_mbx_data); |
|
if (err) |
|
return err; |
|
|
|
/* request the IRQ */ |
|
err = request_irq(entry->vector, fm10k_msix_mbx_pf, 0, |
|
dev->name, interface); |
|
if (err) { |
|
netif_err(interface, probe, dev, |
|
"request_irq for msix_mbx failed: %d\n", err); |
|
return err; |
|
} |
|
|
|
/* Enable interrupts w/ no moderation for "other" interrupts */ |
|
fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_pcie_fault), other_itr); |
|
fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_switch_up_down), other_itr); |
|
fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_sram), other_itr); |
|
fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_max_hold_time), other_itr); |
|
fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_vflr), other_itr); |
|
|
|
/* Enable interrupts w/ moderation for mailbox */ |
|
fm10k_write_reg(hw, FM10K_INT_MAP(fm10k_int_mailbox), mbx_itr); |
|
|
|
/* Enable individual interrupt causes */ |
|
fm10k_write_reg(hw, FM10K_EIMR, FM10K_EIMR_ENABLE(PCA_FAULT) | |
|
FM10K_EIMR_ENABLE(FUM_FAULT) | |
|
FM10K_EIMR_ENABLE(MAILBOX) | |
|
FM10K_EIMR_ENABLE(SWITCHREADY) | |
|
FM10K_EIMR_ENABLE(SWITCHNOTREADY) | |
|
FM10K_EIMR_ENABLE(SRAMERROR) | |
|
FM10K_EIMR_ENABLE(VFLR) | |
|
FM10K_EIMR_ENABLE(MAXHOLDTIME)); |
|
|
|
/* enable interrupt */ |
|
fm10k_write_reg(hw, FM10K_ITR(entry->entry), FM10K_ITR_ENABLE); |
|
|
|
return 0; |
|
} |
|
|
|
int fm10k_mbx_request_irq(struct fm10k_intfc *interface) |
|
{ |
|
struct fm10k_hw *hw = &interface->hw; |
|
int err; |
|
|
|
/* enable Mailbox cause */ |
|
if (hw->mac.type == fm10k_mac_pf) |
|
err = fm10k_mbx_request_irq_pf(interface); |
|
else |
|
err = fm10k_mbx_request_irq_vf(interface); |
|
if (err) |
|
return err; |
|
|
|
/* connect mailbox */ |
|
err = hw->mbx.ops.connect(hw, &hw->mbx); |
|
|
|
/* if the mailbox failed to connect, then free IRQ */ |
|
if (err) |
|
fm10k_mbx_free_irq(interface); |
|
|
|
return err; |
|
} |
|
|
|
/** |
|
* fm10k_qv_free_irq - release interrupts associated with queue vectors |
|
* @interface: board private structure |
|
* |
|
* Release all interrupts associated with this interface |
|
**/ |
|
void fm10k_qv_free_irq(struct fm10k_intfc *interface) |
|
{ |
|
int vector = interface->num_q_vectors; |
|
struct msix_entry *entry; |
|
|
|
entry = &interface->msix_entries[NON_Q_VECTORS + vector]; |
|
|
|
while (vector) { |
|
struct fm10k_q_vector *q_vector; |
|
|
|
vector--; |
|
entry--; |
|
q_vector = interface->q_vector[vector]; |
|
|
|
if (!q_vector->tx.count && !q_vector->rx.count) |
|
continue; |
|
|
|
/* clear the affinity_mask in the IRQ descriptor */ |
|
irq_set_affinity_hint(entry->vector, NULL); |
|
|
|
/* disable interrupts */ |
|
writel(FM10K_ITR_MASK_SET, q_vector->itr); |
|
|
|
free_irq(entry->vector, q_vector); |
|
} |
|
} |
|
|
|
/** |
|
* fm10k_qv_request_irq - initialize interrupts for queue vectors |
|
* @interface: board private structure |
|
* |
|
* Attempts to configure interrupts using the best available |
|
* capabilities of the hardware and kernel. |
|
**/ |
|
int fm10k_qv_request_irq(struct fm10k_intfc *interface) |
|
{ |
|
struct net_device *dev = interface->netdev; |
|
struct fm10k_hw *hw = &interface->hw; |
|
struct msix_entry *entry; |
|
unsigned int ri = 0, ti = 0; |
|
int vector, err; |
|
|
|
entry = &interface->msix_entries[NON_Q_VECTORS]; |
|
|
|
for (vector = 0; vector < interface->num_q_vectors; vector++) { |
|
struct fm10k_q_vector *q_vector = interface->q_vector[vector]; |
|
|
|
/* name the vector */ |
|
if (q_vector->tx.count && q_vector->rx.count) { |
|
snprintf(q_vector->name, sizeof(q_vector->name), |
|
"%s-TxRx-%u", dev->name, ri++); |
|
ti++; |
|
} else if (q_vector->rx.count) { |
|
snprintf(q_vector->name, sizeof(q_vector->name), |
|
"%s-rx-%u", dev->name, ri++); |
|
} else if (q_vector->tx.count) { |
|
snprintf(q_vector->name, sizeof(q_vector->name), |
|
"%s-tx-%u", dev->name, ti++); |
|
} else { |
|
/* skip this unused q_vector */ |
|
continue; |
|
} |
|
|
|
/* Assign ITR register to q_vector */ |
|
q_vector->itr = (hw->mac.type == fm10k_mac_pf) ? |
|
&interface->uc_addr[FM10K_ITR(entry->entry)] : |
|
&interface->uc_addr[FM10K_VFITR(entry->entry)]; |
|
|
|
/* request the IRQ */ |
|
err = request_irq(entry->vector, &fm10k_msix_clean_rings, 0, |
|
q_vector->name, q_vector); |
|
if (err) { |
|
netif_err(interface, probe, dev, |
|
"request_irq failed for MSIX interrupt Error: %d\n", |
|
err); |
|
goto err_out; |
|
} |
|
|
|
/* assign the mask for this irq */ |
|
irq_set_affinity_hint(entry->vector, &q_vector->affinity_mask); |
|
|
|
/* Enable q_vector */ |
|
writel(FM10K_ITR_ENABLE, q_vector->itr); |
|
|
|
entry++; |
|
} |
|
|
|
return 0; |
|
|
|
err_out: |
|
/* wind through the ring freeing all entries and vectors */ |
|
while (vector) { |
|
struct fm10k_q_vector *q_vector; |
|
|
|
entry--; |
|
vector--; |
|
q_vector = interface->q_vector[vector]; |
|
|
|
if (!q_vector->tx.count && !q_vector->rx.count) |
|
continue; |
|
|
|
/* clear the affinity_mask in the IRQ descriptor */ |
|
irq_set_affinity_hint(entry->vector, NULL); |
|
|
|
/* disable interrupts */ |
|
writel(FM10K_ITR_MASK_SET, q_vector->itr); |
|
|
|
free_irq(entry->vector, q_vector); |
|
} |
|
|
|
return err; |
|
} |
|
|
|
void fm10k_up(struct fm10k_intfc *interface) |
|
{ |
|
struct fm10k_hw *hw = &interface->hw; |
|
|
|
/* Enable Tx/Rx DMA */ |
|
hw->mac.ops.start_hw(hw); |
|
|
|
/* configure Tx descriptor rings */ |
|
fm10k_configure_tx(interface); |
|
|
|
/* configure Rx descriptor rings */ |
|
fm10k_configure_rx(interface); |
|
|
|
/* configure interrupts */ |
|
hw->mac.ops.update_int_moderator(hw); |
|
|
|
/* enable statistics capture again */ |
|
clear_bit(__FM10K_UPDATING_STATS, interface->state); |
|
|
|
/* clear down bit to indicate we are ready to go */ |
|
clear_bit(__FM10K_DOWN, interface->state); |
|
|
|
/* enable polling cleanups */ |
|
fm10k_napi_enable_all(interface); |
|
|
|
/* re-establish Rx filters */ |
|
fm10k_restore_rx_state(interface); |
|
|
|
/* enable transmits */ |
|
netif_tx_start_all_queues(interface->netdev); |
|
|
|
/* kick off the service timer now */ |
|
hw->mac.get_host_state = true; |
|
mod_timer(&interface->service_timer, jiffies); |
|
} |
|
|
|
static void fm10k_napi_disable_all(struct fm10k_intfc *interface) |
|
{ |
|
struct fm10k_q_vector *q_vector; |
|
int q_idx; |
|
|
|
for (q_idx = 0; q_idx < interface->num_q_vectors; q_idx++) { |
|
q_vector = interface->q_vector[q_idx]; |
|
napi_disable(&q_vector->napi); |
|
} |
|
} |
|
|
|
void fm10k_down(struct fm10k_intfc *interface) |
|
{ |
|
struct net_device *netdev = interface->netdev; |
|
struct fm10k_hw *hw = &interface->hw; |
|
int err, i = 0, count = 0; |
|
|
|
/* signal that we are down to the interrupt handler and service task */ |
|
if (test_and_set_bit(__FM10K_DOWN, interface->state)) |
|
return; |
|
|
|
/* call carrier off first to avoid false dev_watchdog timeouts */ |
|
netif_carrier_off(netdev); |
|
|
|
/* disable transmits */ |
|
netif_tx_stop_all_queues(netdev); |
|
netif_tx_disable(netdev); |
|
|
|
/* reset Rx filters */ |
|
fm10k_reset_rx_state(interface); |
|
|
|
/* disable polling routines */ |
|
fm10k_napi_disable_all(interface); |
|
|
|
/* capture stats one last time before stopping interface */ |
|
fm10k_update_stats(interface); |
|
|
|
/* prevent updating statistics while we're down */ |
|
while (test_and_set_bit(__FM10K_UPDATING_STATS, interface->state)) |
|
usleep_range(1000, 2000); |
|
|
|
/* skip waiting for TX DMA if we lost PCIe link */ |
|
if (FM10K_REMOVED(hw->hw_addr)) |
|
goto skip_tx_dma_drain; |
|
|
|
/* In some rare circumstances it can take a while for Tx queues to |
|
* quiesce and be fully disabled. Attempt to .stop_hw() first, and |
|
* then if we get ERR_REQUESTS_PENDING, go ahead and wait in a loop |
|
* until the Tx queues have emptied, or until a number of retries. If |
|
* we fail to clear within the retry loop, we will issue a warning |
|
* indicating that Tx DMA is probably hung. Note this means we call |
|
* .stop_hw() twice but this shouldn't cause any problems. |
|
*/ |
|
err = hw->mac.ops.stop_hw(hw); |
|
if (err != FM10K_ERR_REQUESTS_PENDING) |
|
goto skip_tx_dma_drain; |
|
|
|
#define TX_DMA_DRAIN_RETRIES 25 |
|
for (count = 0; count < TX_DMA_DRAIN_RETRIES; count++) { |
|
usleep_range(10000, 20000); |
|
|
|
/* start checking at the last ring to have pending Tx */ |
|
for (; i < interface->num_tx_queues; i++) |
|
if (fm10k_get_tx_pending(interface->tx_ring[i], false)) |
|
break; |
|
|
|
/* if all the queues are drained, we can break now */ |
|
if (i == interface->num_tx_queues) |
|
break; |
|
} |
|
|
|
if (count >= TX_DMA_DRAIN_RETRIES) |
|
dev_err(&interface->pdev->dev, |
|
"Tx queues failed to drain after %d tries. Tx DMA is probably hung.\n", |
|
count); |
|
skip_tx_dma_drain: |
|
/* Disable DMA engine for Tx/Rx */ |
|
err = hw->mac.ops.stop_hw(hw); |
|
if (err == FM10K_ERR_REQUESTS_PENDING) |
|
dev_err(&interface->pdev->dev, |
|
"due to pending requests hw was not shut down gracefully\n"); |
|
else if (err) |
|
dev_err(&interface->pdev->dev, "stop_hw failed: %d\n", err); |
|
|
|
/* free any buffers still on the rings */ |
|
fm10k_clean_all_tx_rings(interface); |
|
fm10k_clean_all_rx_rings(interface); |
|
} |
|
|
|
/** |
|
* fm10k_sw_init - Initialize general software structures |
|
* @interface: host interface private structure to initialize |
|
* @ent: PCI device ID entry |
|
* |
|
* fm10k_sw_init initializes the interface private data structure. |
|
* Fields are initialized based on PCI device information and |
|
* OS network device settings (MTU size). |
|
**/ |
|
static int fm10k_sw_init(struct fm10k_intfc *interface, |
|
const struct pci_device_id *ent) |
|
{ |
|
const struct fm10k_info *fi = fm10k_info_tbl[ent->driver_data]; |
|
struct fm10k_hw *hw = &interface->hw; |
|
struct pci_dev *pdev = interface->pdev; |
|
struct net_device *netdev = interface->netdev; |
|
u32 rss_key[FM10K_RSSRK_SIZE]; |
|
unsigned int rss; |
|
int err; |
|
|
|
/* initialize back pointer */ |
|
hw->back = interface; |
|
hw->hw_addr = interface->uc_addr; |
|
|
|
/* PCI config space info */ |
|
hw->vendor_id = pdev->vendor; |
|
hw->device_id = pdev->device; |
|
hw->revision_id = pdev->revision; |
|
hw->subsystem_vendor_id = pdev->subsystem_vendor; |
|
hw->subsystem_device_id = pdev->subsystem_device; |
|
|
|
/* Setup hw api */ |
|
memcpy(&hw->mac.ops, fi->mac_ops, sizeof(hw->mac.ops)); |
|
hw->mac.type = fi->mac; |
|
|
|
/* Setup IOV handlers */ |
|
if (fi->iov_ops) |
|
memcpy(&hw->iov.ops, fi->iov_ops, sizeof(hw->iov.ops)); |
|
|
|
/* Set common capability flags and settings */ |
|
rss = min_t(int, FM10K_MAX_RSS_INDICES, num_online_cpus()); |
|
interface->ring_feature[RING_F_RSS].limit = rss; |
|
fi->get_invariants(hw); |
|
|
|
/* pick up the PCIe bus settings for reporting later */ |
|
if (hw->mac.ops.get_bus_info) |
|
hw->mac.ops.get_bus_info(hw); |
|
|
|
/* limit the usable DMA range */ |
|
if (hw->mac.ops.set_dma_mask) |
|
hw->mac.ops.set_dma_mask(hw, dma_get_mask(&pdev->dev)); |
|
|
|
/* update netdev with DMA restrictions */ |
|
if (dma_get_mask(&pdev->dev) > DMA_BIT_MASK(32)) { |
|
netdev->features |= NETIF_F_HIGHDMA; |
|
netdev->vlan_features |= NETIF_F_HIGHDMA; |
|
} |
|
|
|
/* reset and initialize the hardware so it is in a known state */ |
|
err = hw->mac.ops.reset_hw(hw); |
|
if (err) { |
|
dev_err(&pdev->dev, "reset_hw failed: %d\n", err); |
|
return err; |
|
} |
|
|
|
err = hw->mac.ops.init_hw(hw); |
|
if (err) { |
|
dev_err(&pdev->dev, "init_hw failed: %d\n", err); |
|
return err; |
|
} |
|
|
|
/* initialize hardware statistics */ |
|
hw->mac.ops.update_hw_stats(hw, &interface->stats); |
|
|
|
/* Set upper limit on IOV VFs that can be allocated */ |
|
pci_sriov_set_totalvfs(pdev, hw->iov.total_vfs); |
|
|
|
/* Start with random Ethernet address */ |
|
eth_random_addr(hw->mac.addr); |
|
|
|
/* Initialize MAC address from hardware */ |
|
err = hw->mac.ops.read_mac_addr(hw); |
|
if (err) { |
|
dev_warn(&pdev->dev, |
|
"Failed to obtain MAC address defaulting to random\n"); |
|
/* tag address assignment as random */ |
|
netdev->addr_assign_type |= NET_ADDR_RANDOM; |
|
} |
|
|
|
ether_addr_copy(netdev->dev_addr, hw->mac.addr); |
|
ether_addr_copy(netdev->perm_addr, hw->mac.addr); |
|
|
|
if (!is_valid_ether_addr(netdev->perm_addr)) { |
|
dev_err(&pdev->dev, "Invalid MAC Address\n"); |
|
return -EIO; |
|
} |
|
|
|
/* initialize DCBNL interface */ |
|
fm10k_dcbnl_set_ops(netdev); |
|
|
|
/* set default ring sizes */ |
|
interface->tx_ring_count = FM10K_DEFAULT_TXD; |
|
interface->rx_ring_count = FM10K_DEFAULT_RXD; |
|
|
|
/* set default interrupt moderation */ |
|
interface->tx_itr = FM10K_TX_ITR_DEFAULT; |
|
interface->rx_itr = FM10K_ITR_ADAPTIVE | FM10K_RX_ITR_DEFAULT; |
|
|
|
/* Initialize the MAC/VLAN queue */ |
|
INIT_LIST_HEAD(&interface->macvlan_requests); |
|
|
|
netdev_rss_key_fill(rss_key, sizeof(rss_key)); |
|
memcpy(interface->rssrk, rss_key, sizeof(rss_key)); |
|
|
|
/* Initialize the mailbox lock */ |
|
spin_lock_init(&interface->mbx_lock); |
|
spin_lock_init(&interface->macvlan_lock); |
|
|
|
/* Start off interface as being down */ |
|
set_bit(__FM10K_DOWN, interface->state); |
|
set_bit(__FM10K_UPDATING_STATS, interface->state); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* fm10k_probe - Device Initialization Routine |
|
* @pdev: PCI device information struct |
|
* @ent: entry in fm10k_pci_tbl |
|
* |
|
* Returns 0 on success, negative on failure |
|
* |
|
* fm10k_probe initializes an interface identified by a pci_dev structure. |
|
* The OS initialization, configuring of the interface private structure, |
|
* and a hardware reset occur. |
|
**/ |
|
static int fm10k_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
|
{ |
|
struct net_device *netdev; |
|
struct fm10k_intfc *interface; |
|
int err; |
|
|
|
if (pdev->error_state != pci_channel_io_normal) { |
|
dev_err(&pdev->dev, |
|
"PCI device still in an error state. Unable to load...\n"); |
|
return -EIO; |
|
} |
|
|
|
err = pci_enable_device_mem(pdev); |
|
if (err) { |
|
dev_err(&pdev->dev, |
|
"PCI enable device failed: %d\n", err); |
|
return err; |
|
} |
|
|
|
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48)); |
|
if (err) |
|
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
|
if (err) { |
|
dev_err(&pdev->dev, |
|
"DMA configuration failed: %d\n", err); |
|
goto err_dma; |
|
} |
|
|
|
err = pci_request_mem_regions(pdev, fm10k_driver_name); |
|
if (err) { |
|
dev_err(&pdev->dev, |
|
"pci_request_selected_regions failed: %d\n", err); |
|
goto err_pci_reg; |
|
} |
|
|
|
pci_enable_pcie_error_reporting(pdev); |
|
|
|
pci_set_master(pdev); |
|
pci_save_state(pdev); |
|
|
|
netdev = fm10k_alloc_netdev(fm10k_info_tbl[ent->driver_data]); |
|
if (!netdev) { |
|
err = -ENOMEM; |
|
goto err_alloc_netdev; |
|
} |
|
|
|
SET_NETDEV_DEV(netdev, &pdev->dev); |
|
|
|
interface = netdev_priv(netdev); |
|
pci_set_drvdata(pdev, interface); |
|
|
|
interface->netdev = netdev; |
|
interface->pdev = pdev; |
|
|
|
interface->uc_addr = ioremap(pci_resource_start(pdev, 0), |
|
FM10K_UC_ADDR_SIZE); |
|
if (!interface->uc_addr) { |
|
err = -EIO; |
|
goto err_ioremap; |
|
} |
|
|
|
err = fm10k_sw_init(interface, ent); |
|
if (err) |
|
goto err_sw_init; |
|
|
|
/* enable debugfs support */ |
|
fm10k_dbg_intfc_init(interface); |
|
|
|
err = fm10k_init_queueing_scheme(interface); |
|
if (err) |
|
goto err_sw_init; |
|
|
|
/* the mbx interrupt might attempt to schedule the service task, so we |
|
* must ensure it is disabled since we haven't yet requested the timer |
|
* or work item. |
|
*/ |
|
set_bit(__FM10K_SERVICE_DISABLE, interface->state); |
|
|
|
err = fm10k_mbx_request_irq(interface); |
|
if (err) |
|
goto err_mbx_interrupt; |
|
|
|
/* final check of hardware state before registering the interface */ |
|
err = fm10k_hw_ready(interface); |
|
if (err) |
|
goto err_register; |
|
|
|
err = register_netdev(netdev); |
|
if (err) |
|
goto err_register; |
|
|
|
/* carrier off reporting is important to ethtool even BEFORE open */ |
|
netif_carrier_off(netdev); |
|
|
|
/* stop all the transmit queues from transmitting until link is up */ |
|
netif_tx_stop_all_queues(netdev); |
|
|
|
/* Initialize service timer and service task late in order to avoid |
|
* cleanup issues. |
|
*/ |
|
timer_setup(&interface->service_timer, fm10k_service_timer, 0); |
|
INIT_WORK(&interface->service_task, fm10k_service_task); |
|
|
|
/* Setup the MAC/VLAN queue */ |
|
INIT_DELAYED_WORK(&interface->macvlan_task, fm10k_macvlan_task); |
|
|
|
/* kick off service timer now, even when interface is down */ |
|
mod_timer(&interface->service_timer, (HZ * 2) + jiffies); |
|
|
|
/* print warning for non-optimal configurations */ |
|
pcie_print_link_status(interface->pdev); |
|
|
|
/* report MAC address for logging */ |
|
dev_info(&pdev->dev, "%pM\n", netdev->dev_addr); |
|
|
|
/* enable SR-IOV after registering netdev to enforce PF/VF ordering */ |
|
fm10k_iov_configure(pdev, 0); |
|
|
|
/* clear the service task disable bit and kick off service task */ |
|
clear_bit(__FM10K_SERVICE_DISABLE, interface->state); |
|
fm10k_service_event_schedule(interface); |
|
|
|
return 0; |
|
|
|
err_register: |
|
fm10k_mbx_free_irq(interface); |
|
err_mbx_interrupt: |
|
fm10k_clear_queueing_scheme(interface); |
|
err_sw_init: |
|
if (interface->sw_addr) |
|
iounmap(interface->sw_addr); |
|
iounmap(interface->uc_addr); |
|
err_ioremap: |
|
free_netdev(netdev); |
|
err_alloc_netdev: |
|
pci_disable_pcie_error_reporting(pdev); |
|
pci_release_mem_regions(pdev); |
|
err_pci_reg: |
|
err_dma: |
|
pci_disable_device(pdev); |
|
return err; |
|
} |
|
|
|
/** |
|
* fm10k_remove - Device Removal Routine |
|
* @pdev: PCI device information struct |
|
* |
|
* fm10k_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 fm10k_remove(struct pci_dev *pdev) |
|
{ |
|
struct fm10k_intfc *interface = pci_get_drvdata(pdev); |
|
struct net_device *netdev = interface->netdev; |
|
|
|
del_timer_sync(&interface->service_timer); |
|
|
|
fm10k_stop_service_event(interface); |
|
fm10k_stop_macvlan_task(interface); |
|
|
|
/* Remove all pending MAC/VLAN requests */ |
|
fm10k_clear_macvlan_queue(interface, interface->glort, true); |
|
|
|
/* free netdev, this may bounce the interrupts due to setup_tc */ |
|
if (netdev->reg_state == NETREG_REGISTERED) |
|
unregister_netdev(netdev); |
|
|
|
/* release VFs */ |
|
fm10k_iov_disable(pdev); |
|
|
|
/* disable mailbox interrupt */ |
|
fm10k_mbx_free_irq(interface); |
|
|
|
/* free interrupts */ |
|
fm10k_clear_queueing_scheme(interface); |
|
|
|
/* remove any debugfs interfaces */ |
|
fm10k_dbg_intfc_exit(interface); |
|
|
|
if (interface->sw_addr) |
|
iounmap(interface->sw_addr); |
|
iounmap(interface->uc_addr); |
|
|
|
free_netdev(netdev); |
|
|
|
pci_release_mem_regions(pdev); |
|
|
|
pci_disable_pcie_error_reporting(pdev); |
|
|
|
pci_disable_device(pdev); |
|
} |
|
|
|
static void fm10k_prepare_suspend(struct fm10k_intfc *interface) |
|
{ |
|
/* the watchdog task reads from registers, which might appear like |
|
* a surprise remove if the PCIe device is disabled while we're |
|
* stopped. We stop the watchdog task until after we resume software |
|
* activity. |
|
* |
|
* Note that the MAC/VLAN task will be stopped as part of preparing |
|
* for reset so we don't need to handle it here. |
|
*/ |
|
fm10k_stop_service_event(interface); |
|
|
|
if (fm10k_prepare_for_reset(interface)) |
|
set_bit(__FM10K_RESET_SUSPENDED, interface->state); |
|
} |
|
|
|
static int fm10k_handle_resume(struct fm10k_intfc *interface) |
|
{ |
|
struct fm10k_hw *hw = &interface->hw; |
|
int err; |
|
|
|
/* Even if we didn't properly prepare for reset in |
|
* fm10k_prepare_suspend, we'll attempt to resume anyways. |
|
*/ |
|
if (!test_and_clear_bit(__FM10K_RESET_SUSPENDED, interface->state)) |
|
dev_warn(&interface->pdev->dev, |
|
"Device was shut down as part of suspend... Attempting to recover\n"); |
|
|
|
/* reset statistics starting values */ |
|
hw->mac.ops.rebind_hw_stats(hw, &interface->stats); |
|
|
|
err = fm10k_handle_reset(interface); |
|
if (err) |
|
return err; |
|
|
|
/* assume host is not ready, to prevent race with watchdog in case we |
|
* actually don't have connection to the switch |
|
*/ |
|
interface->host_ready = false; |
|
fm10k_watchdog_host_not_ready(interface); |
|
|
|
/* force link to stay down for a second to prevent link flutter */ |
|
interface->link_down_event = jiffies + (HZ); |
|
set_bit(__FM10K_LINK_DOWN, interface->state); |
|
|
|
/* restart the service task */ |
|
fm10k_start_service_event(interface); |
|
|
|
/* Restart the MAC/VLAN request queue in-case of outstanding events */ |
|
fm10k_macvlan_schedule(interface); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* fm10k_resume - Generic PM resume hook |
|
* @dev: generic device structure |
|
* |
|
* Generic PM hook used when waking the device from a low power state after |
|
* suspend or hibernation. This function does not need to handle lower PCIe |
|
* device state as the stack takes care of that for us. |
|
**/ |
|
static int __maybe_unused fm10k_resume(struct device *dev) |
|
{ |
|
struct fm10k_intfc *interface = dev_get_drvdata(dev); |
|
struct net_device *netdev = interface->netdev; |
|
struct fm10k_hw *hw = &interface->hw; |
|
int err; |
|
|
|
/* refresh hw_addr in case it was dropped */ |
|
hw->hw_addr = interface->uc_addr; |
|
|
|
err = fm10k_handle_resume(interface); |
|
if (err) |
|
return err; |
|
|
|
netif_device_attach(netdev); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* fm10k_suspend - Generic PM suspend hook |
|
* @dev: generic device structure |
|
* |
|
* Generic PM hook used when setting the device into a low power state for |
|
* system suspend or hibernation. This function does not need to handle lower |
|
* PCIe device state as the stack takes care of that for us. |
|
**/ |
|
static int __maybe_unused fm10k_suspend(struct device *dev) |
|
{ |
|
struct fm10k_intfc *interface = dev_get_drvdata(dev); |
|
struct net_device *netdev = interface->netdev; |
|
|
|
netif_device_detach(netdev); |
|
|
|
fm10k_prepare_suspend(interface); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* fm10k_io_error_detected - called when PCI error is detected |
|
* @pdev: Pointer to PCI device |
|
* @state: The current pci connection state |
|
* |
|
* This function is called after a PCI bus error affecting |
|
* this device has been detected. |
|
*/ |
|
static pci_ers_result_t fm10k_io_error_detected(struct pci_dev *pdev, |
|
pci_channel_state_t state) |
|
{ |
|
struct fm10k_intfc *interface = pci_get_drvdata(pdev); |
|
struct net_device *netdev = interface->netdev; |
|
|
|
netif_device_detach(netdev); |
|
|
|
if (state == pci_channel_io_perm_failure) |
|
return PCI_ERS_RESULT_DISCONNECT; |
|
|
|
fm10k_prepare_suspend(interface); |
|
|
|
/* Request a slot reset. */ |
|
return PCI_ERS_RESULT_NEED_RESET; |
|
} |
|
|
|
/** |
|
* fm10k_io_slot_reset - called after the pci bus has been reset. |
|
* @pdev: Pointer to PCI device |
|
* |
|
* Restart the card from scratch, as if from a cold-boot. |
|
*/ |
|
static pci_ers_result_t fm10k_io_slot_reset(struct pci_dev *pdev) |
|
{ |
|
pci_ers_result_t result; |
|
|
|
if (pci_reenable_device(pdev)) { |
|
dev_err(&pdev->dev, |
|
"Cannot re-enable PCI device after reset.\n"); |
|
result = PCI_ERS_RESULT_DISCONNECT; |
|
} else { |
|
pci_set_master(pdev); |
|
pci_restore_state(pdev); |
|
|
|
/* After second error pci->state_saved is false, this |
|
* resets it so EEH doesn't break. |
|
*/ |
|
pci_save_state(pdev); |
|
|
|
pci_wake_from_d3(pdev, false); |
|
|
|
result = PCI_ERS_RESULT_RECOVERED; |
|
} |
|
|
|
return result; |
|
} |
|
|
|
/** |
|
* fm10k_io_resume - called when traffic can start flowing again. |
|
* @pdev: Pointer to PCI device |
|
* |
|
* This callback is called when the error recovery driver tells us that |
|
* its OK to resume normal operation. |
|
*/ |
|
static void fm10k_io_resume(struct pci_dev *pdev) |
|
{ |
|
struct fm10k_intfc *interface = pci_get_drvdata(pdev); |
|
struct net_device *netdev = interface->netdev; |
|
int err; |
|
|
|
err = fm10k_handle_resume(interface); |
|
|
|
if (err) |
|
dev_warn(&pdev->dev, |
|
"%s failed: %d\n", __func__, err); |
|
else |
|
netif_device_attach(netdev); |
|
} |
|
|
|
/** |
|
* fm10k_io_reset_prepare - called when PCI function is about to be reset |
|
* @pdev: Pointer to PCI device |
|
* |
|
* This callback is called when the PCI function is about to be reset, |
|
* allowing the device driver to prepare for it. |
|
*/ |
|
static void fm10k_io_reset_prepare(struct pci_dev *pdev) |
|
{ |
|
/* warn incase we have any active VF devices */ |
|
if (pci_num_vf(pdev)) |
|
dev_warn(&pdev->dev, |
|
"PCIe FLR may cause issues for any active VF devices\n"); |
|
fm10k_prepare_suspend(pci_get_drvdata(pdev)); |
|
} |
|
|
|
/** |
|
* fm10k_io_reset_done - called when PCI function has finished resetting |
|
* @pdev: Pointer to PCI device |
|
* |
|
* This callback is called just after the PCI function is reset, such as via |
|
* /sys/class/net/<enpX>/device/reset or similar. |
|
*/ |
|
static void fm10k_io_reset_done(struct pci_dev *pdev) |
|
{ |
|
struct fm10k_intfc *interface = pci_get_drvdata(pdev); |
|
int err = fm10k_handle_resume(interface); |
|
|
|
if (err) { |
|
dev_warn(&pdev->dev, |
|
"%s failed: %d\n", __func__, err); |
|
netif_device_detach(interface->netdev); |
|
} |
|
} |
|
|
|
static const struct pci_error_handlers fm10k_err_handler = { |
|
.error_detected = fm10k_io_error_detected, |
|
.slot_reset = fm10k_io_slot_reset, |
|
.resume = fm10k_io_resume, |
|
.reset_prepare = fm10k_io_reset_prepare, |
|
.reset_done = fm10k_io_reset_done, |
|
}; |
|
|
|
static SIMPLE_DEV_PM_OPS(fm10k_pm_ops, fm10k_suspend, fm10k_resume); |
|
|
|
static struct pci_driver fm10k_driver = { |
|
.name = fm10k_driver_name, |
|
.id_table = fm10k_pci_tbl, |
|
.probe = fm10k_probe, |
|
.remove = fm10k_remove, |
|
.driver = { |
|
.pm = &fm10k_pm_ops, |
|
}, |
|
.sriov_configure = fm10k_iov_configure, |
|
.err_handler = &fm10k_err_handler |
|
}; |
|
|
|
/** |
|
* fm10k_register_pci_driver - register driver interface |
|
* |
|
* This function is called on module load in order to register the driver. |
|
**/ |
|
int fm10k_register_pci_driver(void) |
|
{ |
|
return pci_register_driver(&fm10k_driver); |
|
} |
|
|
|
/** |
|
* fm10k_unregister_pci_driver - unregister driver interface |
|
* |
|
* This function is called on module unload in order to remove the driver. |
|
**/ |
|
void fm10k_unregister_pci_driver(void) |
|
{ |
|
pci_unregister_driver(&fm10k_driver); |
|
}
|
|
|