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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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netxen: support pci error handlers
o Support pci error detection and recovery. o Refactor suspend and resume code, to share with io_error_detected, and slot_reset callbacks o NX_NEED_AER device state added, to synchronize with firmware recovery. Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amit Kumar Salecha
David S. Miller
parent
6a808c6c02
commit
e87ad55393
@ -969,7 +969,8 @@ enum {
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#define NX_DEV_READY 3
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#define NX_DEV_NEED_RESET 4
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#define NX_DEV_NEED_QUISCENT 5
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#define NX_DEV_FAILED 6
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#define NX_DEV_NEED_AER 6
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#define NX_DEV_FAILED 7
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#define NX_RCODE_DRIVER_INFO 0x20000000
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#define NX_RCODE_DRIVER_CAN_RELOAD 0x40000000
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@ -35,6 +35,7 @@
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#include <linux/ipv6.h>
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#include <linux/inetdevice.h>
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#include <linux/sysfs.h>
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#include <linux/aer.h>
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MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Converged Ethernet Driver");
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MODULE_LICENSE("GPL");
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@ -84,6 +85,7 @@ static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
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static void netxen_create_diag_entries(struct netxen_adapter *adapter);
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static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
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static int nx_dev_request_aer(struct netxen_adapter *adapter);
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static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
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static int netxen_can_start_firmware(struct netxen_adapter *adapter);
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@ -1262,6 +1264,9 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
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goto err_out_disable_pdev;
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if (NX_IS_REVISION_P3(pdev->revision))
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pci_enable_pcie_error_reporting(pdev);
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pci_set_master(pdev);
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netdev = alloc_etherdev(sizeof(struct netxen_adapter));
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@ -1409,17 +1414,19 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev)
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netxen_release_firmware(adapter);
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if (NX_IS_REVISION_P3(pdev->revision))
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pci_disable_pcie_error_reporting(pdev);
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pci_release_regions(pdev);
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pci_disable_device(pdev);
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pci_set_drvdata(pdev, NULL);
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free_netdev(netdev);
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}
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static int __netxen_nic_shutdown(struct pci_dev *pdev)
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static void netxen_nic_detach_func(struct netxen_adapter *adapter)
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{
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struct netxen_adapter *adapter = pci_get_drvdata(pdev);
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struct net_device *netdev = adapter->netdev;
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int retval;
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netif_device_detach(netdev);
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@ -1438,43 +1445,9 @@ static int __netxen_nic_shutdown(struct pci_dev *pdev)
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nx_decr_dev_ref_cnt(adapter);
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clear_bit(__NX_RESETTING, &adapter->state);
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retval = pci_save_state(pdev);
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if (retval)
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return retval;
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if (netxen_nic_wol_supported(adapter)) {
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pci_enable_wake(pdev, PCI_D3cold, 1);
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pci_enable_wake(pdev, PCI_D3hot, 1);
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}
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return 0;
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}
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static void netxen_nic_shutdown(struct pci_dev *pdev)
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{
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if (__netxen_nic_shutdown(pdev))
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return;
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pci_disable_device(pdev);
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}
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#ifdef CONFIG_PM
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static int
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netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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int retval;
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retval = __netxen_nic_shutdown(pdev);
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if (retval)
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return retval;
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pci_set_power_state(pdev, pci_choose_state(pdev, state));
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pci_disable_device(pdev);
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return 0;
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}
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static int
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netxen_nic_resume(struct pci_dev *pdev)
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static int netxen_nic_attach_func(struct pci_dev *pdev)
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{
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struct netxen_adapter *adapter = pci_get_drvdata(pdev);
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struct net_device *netdev = adapter->netdev;
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@ -1519,6 +1492,85 @@ netxen_nic_resume(struct pci_dev *pdev)
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nx_decr_dev_ref_cnt(adapter);
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return err;
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}
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static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
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pci_channel_state_t state)
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{
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struct netxen_adapter *adapter = pci_get_drvdata(pdev);
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if (state == pci_channel_io_perm_failure)
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return PCI_ERS_RESULT_DISCONNECT;
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if (nx_dev_request_aer(adapter))
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return PCI_ERS_RESULT_RECOVERED;
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netxen_nic_detach_func(adapter);
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pci_disable_device(pdev);
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return PCI_ERS_RESULT_NEED_RESET;
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}
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static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
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{
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int err = 0;
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err = netxen_nic_attach_func(pdev);
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return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
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}
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static void netxen_io_resume(struct pci_dev *pdev)
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{
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pci_cleanup_aer_uncorrect_error_status(pdev);
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}
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static void netxen_nic_shutdown(struct pci_dev *pdev)
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{
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struct netxen_adapter *adapter = pci_get_drvdata(pdev);
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netxen_nic_detach_func(adapter);
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if (pci_save_state(pdev))
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return;
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if (netxen_nic_wol_supported(adapter)) {
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pci_enable_wake(pdev, PCI_D3cold, 1);
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pci_enable_wake(pdev, PCI_D3hot, 1);
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}
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pci_disable_device(pdev);
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}
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#ifdef CONFIG_PM
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static int
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netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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struct netxen_adapter *adapter = pci_get_drvdata(pdev);
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int retval;
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netxen_nic_detach_func(adapter);
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retval = pci_save_state(pdev);
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if (retval)
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return retval;
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if (netxen_nic_wol_supported(adapter)) {
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pci_enable_wake(pdev, PCI_D3cold, 1);
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pci_enable_wake(pdev, PCI_D3hot, 1);
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}
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pci_disable_device(pdev);
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pci_set_power_state(pdev, pci_choose_state(pdev, state));
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return 0;
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}
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static int
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netxen_nic_resume(struct pci_dev *pdev)
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{
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return netxen_nic_attach_func(pdev);
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}
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#endif
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static int netxen_nic_open(struct net_device *netdev)
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@ -2110,20 +2162,49 @@ nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
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return count;
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}
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static void
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nx_dev_request_reset(struct netxen_adapter *adapter)
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static int
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nx_dev_request_aer(struct netxen_adapter *adapter)
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{
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u32 state;
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int ret = -EINVAL;
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if (netxen_api_lock(adapter))
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return;
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return ret;
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state = NXRD32(adapter, NX_CRB_DEV_STATE);
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if (state != NX_DEV_INITALIZING)
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NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
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if (state == NX_DEV_NEED_AER)
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ret = 0;
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else if (state == NX_DEV_READY) {
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NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
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ret = 0;
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}
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netxen_api_unlock(adapter);
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return ret;
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}
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static int
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nx_dev_request_reset(struct netxen_adapter *adapter)
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{
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u32 state;
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int ret = -EINVAL;
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if (netxen_api_lock(adapter))
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return ret;
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state = NXRD32(adapter, NX_CRB_DEV_STATE);
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if (state == NX_DEV_NEED_RESET)
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ret = 0;
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else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
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NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
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ret = 0;
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}
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netxen_api_unlock(adapter);
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return ret;
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}
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static int
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@ -2275,17 +2356,27 @@ netxen_check_health(struct netxen_adapter *adapter)
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u32 state, heartbit;
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struct net_device *netdev = adapter->netdev;
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state = NXRD32(adapter, NX_CRB_DEV_STATE);
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if (state == NX_DEV_NEED_AER)
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return 0;
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if (netxen_nic_check_temp(adapter))
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goto detach;
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if (adapter->need_fw_reset) {
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nx_dev_request_reset(adapter);
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if (nx_dev_request_reset(adapter))
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return 0;
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goto detach;
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}
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state = NXRD32(adapter, NX_CRB_DEV_STATE);
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/* NX_DEV_NEED_RESET, this state can be marked in two cases
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* 1. Tx timeout 2. Fw hang
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* Send request to destroy context in case of tx timeout only
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* and doesn't required in case of Fw hang
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*/
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if (state == NX_DEV_NEED_RESET) {
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adapter->need_fw_reset = 1;
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if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
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goto detach;
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}
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@ -2296,12 +2387,17 @@ netxen_check_health(struct netxen_adapter *adapter)
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if (heartbit != adapter->heartbit) {
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adapter->heartbit = heartbit;
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adapter->fw_fail_cnt = 0;
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if (adapter->need_fw_reset)
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goto detach;
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return 0;
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}
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if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
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return 0;
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if (nx_dev_request_reset(adapter))
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return 0;
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clear_bit(__NX_FW_ATTACHED, &adapter->state);
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dev_info(&netdev->dev, "firmware hang detected\n");
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@ -2731,6 +2827,12 @@ netxen_config_indev_addr(struct net_device *dev, unsigned long event)
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{ }
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#endif
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static struct pci_error_handlers netxen_err_handler = {
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.error_detected = netxen_io_error_detected,
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.slot_reset = netxen_io_slot_reset,
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.resume = netxen_io_resume,
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};
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static struct pci_driver netxen_driver = {
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.name = netxen_nic_driver_name,
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.id_table = netxen_pci_tbl,
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@ -2740,7 +2842,8 @@ static struct pci_driver netxen_driver = {
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.suspend = netxen_nic_suspend,
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.resume = netxen_nic_resume,
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#endif
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.shutdown = netxen_nic_shutdown
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.shutdown = netxen_nic_shutdown,
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.err_handler = &netxen_err_handler
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};
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static int __init netxen_init_module(void)
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