From: Netanel Belgazal Date: Fri, 23 Jun 2017 08:21:53 +0000 (+0300) Subject: net: ena: add reset reason for each device FLR X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e2eed0e307f671e37f3829dfec5dbb1fba826a15;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git net: ena: add reset reason for each device FLR For each device reset, log to the device what is the cause the reset occur. Signed-off-by: Netanel Belgazal Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/amazon/ena/ena_com.c b/drivers/net/ethernet/amazon/ena/ena_com.c index 2721c70492a1..f6e1d30523a6 100644 --- a/drivers/net/ethernet/amazon/ena/ena_com.c +++ b/drivers/net/ethernet/amazon/ena/ena_com.c @@ -1825,7 +1825,8 @@ void ena_com_aenq_intr_handler(struct ena_com_dev *dev, void *data) writel((u32)aenq->head, dev->reg_bar + ENA_REGS_AENQ_HEAD_DB_OFF); } -int ena_com_dev_reset(struct ena_com_dev *ena_dev) +int ena_com_dev_reset(struct ena_com_dev *ena_dev, + enum ena_regs_reset_reason_types reset_reason) { u32 stat, timeout, cap, reset_val; int rc; @@ -1853,6 +1854,8 @@ int ena_com_dev_reset(struct ena_com_dev *ena_dev) /* start reset */ reset_val = ENA_REGS_DEV_CTL_DEV_RESET_MASK; + reset_val |= (reset_reason << ENA_REGS_DEV_CTL_RESET_REASON_SHIFT) & + ENA_REGS_DEV_CTL_RESET_REASON_MASK; writel(reset_val, ena_dev->reg_bar + ENA_REGS_DEV_CTL_OFF); /* Write again the MMIO read request address */ diff --git a/drivers/net/ethernet/amazon/ena/ena_com.h b/drivers/net/ethernet/amazon/ena/ena_com.h index 630c09ad35a5..7b784f8a06a6 100644 --- a/drivers/net/ethernet/amazon/ena/ena_com.h +++ b/drivers/net/ethernet/amazon/ena/ena_com.h @@ -420,10 +420,12 @@ void ena_com_admin_destroy(struct ena_com_dev *ena_dev); /* ena_com_dev_reset - Perform device FLR to the device. * @ena_dev: ENA communication layer struct + * @reset_reason: Specify what is the trigger for the reset in case of an error. * * @return - 0 on success, negative value on failure. */ -int ena_com_dev_reset(struct ena_com_dev *ena_dev); +int ena_com_dev_reset(struct ena_com_dev *ena_dev, + enum ena_regs_reset_reason_types reset_reason); /* ena_com_create_io_queue - Create io queue. * @ena_dev: ENA communication layer struct diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index 1ee06e11654c..0d35a4cc3525 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -87,6 +87,7 @@ static void ena_tx_timeout(struct net_device *dev) if (test_and_set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags)) return; + adapter->reset_reason = ENA_REGS_RESET_OS_NETDEV_WD; u64_stats_update_begin(&adapter->syncp); adapter->dev_stats.tx_timeout++; u64_stats_update_end(&adapter->syncp); @@ -670,6 +671,7 @@ static int validate_tx_req_id(struct ena_ring *tx_ring, u16 req_id) u64_stats_update_end(&tx_ring->syncp); /* Trigger device reset */ + tx_ring->adapter->reset_reason = ENA_REGS_RESET_INV_TX_REQ_ID; set_bit(ENA_FLAG_TRIGGER_RESET, &tx_ring->adapter->flags); return -EFAULT; } @@ -1055,6 +1057,7 @@ error: u64_stats_update_end(&rx_ring->syncp); /* Too many desc from the device. Trigger reset */ + adapter->reset_reason = ENA_REGS_RESET_TOO_MANY_RX_DESCS; set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags); return 0; @@ -1720,7 +1723,7 @@ static void ena_down(struct ena_adapter *adapter) if (test_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags)) { int rc; - rc = ena_com_dev_reset(adapter->ena_dev); + rc = ena_com_dev_reset(adapter->ena_dev, adapter->reset_reason); if (rc) dev_err(&adapter->pdev->dev, "Device reset failed\n"); } @@ -2353,7 +2356,7 @@ static int ena_device_init(struct ena_com_dev *ena_dev, struct pci_dev *pdev, readless_supported = !(pdev->revision & ENA_MMIO_DISABLE_REG_READ); ena_com_set_mmio_read_mode(ena_dev, readless_supported); - rc = ena_com_dev_reset(ena_dev); + rc = ena_com_dev_reset(ena_dev, ENA_REGS_RESET_NORMAL); if (rc) { dev_err(dev, "Can not reset device\n"); goto err_mmio_read_less; @@ -2512,6 +2515,7 @@ static void ena_fw_reset_device(struct work_struct *work) ena_com_mmio_reg_read_request_destroy(ena_dev); + adapter->reset_reason = ENA_REGS_RESET_NORMAL; clear_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags); /* Finish with the destroy part. Start the init part */ @@ -2591,6 +2595,8 @@ static int check_missing_comp_in_queue(struct ena_adapter *adapter, "The number of lost tx completions is above the threshold (%d > %d). Reset the device\n", missed_tx, adapter->missing_tx_completion_threshold); + adapter->reset_reason = + ENA_REGS_RESET_MISS_TX_CMPL; set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags); return -EIO; } @@ -2705,6 +2711,7 @@ static void check_for_missing_keep_alive(struct ena_adapter *adapter) u64_stats_update_begin(&adapter->syncp); adapter->dev_stats.wd_expired++; u64_stats_update_end(&adapter->syncp); + adapter->reset_reason = ENA_REGS_RESET_KEEP_ALIVE_TO; set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags); } } @@ -2717,6 +2724,7 @@ static void check_for_admin_com_state(struct ena_adapter *adapter) u64_stats_update_begin(&adapter->syncp); adapter->dev_stats.admin_q_pause++; u64_stats_update_end(&adapter->syncp); + adapter->reset_reason = ENA_REGS_RESET_ADMIN_TO; set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags); } } @@ -3121,6 +3129,7 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent) ena_set_conf_feat_params(adapter, &get_feat_ctx); adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); + adapter->reset_reason = ENA_REGS_RESET_NORMAL; adapter->tx_ring_size = queue_size; adapter->rx_ring_size = queue_size; @@ -3205,7 +3214,7 @@ err_rss: ena_com_delete_debug_area(ena_dev); ena_com_rss_destroy(ena_dev); err_free_msix: - ena_com_dev_reset(ena_dev); + ena_com_dev_reset(ena_dev, ENA_REGS_RESET_INIT_ERR); ena_free_mgmnt_irq(adapter); pci_free_irq_vectors(adapter->pdev); err_worker_destroy: @@ -3288,7 +3297,7 @@ static void ena_remove(struct pci_dev *pdev) /* Reset the device only if the device is running. */ if (test_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags)) - ena_com_dev_reset(ena_dev); + ena_com_dev_reset(ena_dev, adapter->reset_reason); ena_free_mgmnt_irq(adapter); diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.h b/drivers/net/ethernet/amazon/ena/ena_netdev.h index c5fe4aa926ae..ccbb14cc3038 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.h +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.h @@ -327,6 +327,8 @@ struct ena_adapter { /* last queue index that was checked for uncompleted tx packets */ u32 last_monitored_tx_qid; + + enum ena_regs_reset_reason_types reset_reason; }; void ena_set_ethtool_ops(struct net_device *netdev); diff --git a/drivers/net/ethernet/amazon/ena/ena_regs_defs.h b/drivers/net/ethernet/amazon/ena/ena_regs_defs.h index c3891c521075..9aec43c5bba8 100644 --- a/drivers/net/ethernet/amazon/ena/ena_regs_defs.h +++ b/drivers/net/ethernet/amazon/ena/ena_regs_defs.h @@ -32,6 +32,36 @@ #ifndef _ENA_REGS_H_ #define _ENA_REGS_H_ +enum ena_regs_reset_reason_types { + ENA_REGS_RESET_NORMAL = 0, + + ENA_REGS_RESET_KEEP_ALIVE_TO = 1, + + ENA_REGS_RESET_ADMIN_TO = 2, + + ENA_REGS_RESET_MISS_TX_CMPL = 3, + + ENA_REGS_RESET_INV_RX_REQ_ID = 4, + + ENA_REGS_RESET_INV_TX_REQ_ID = 5, + + ENA_REGS_RESET_TOO_MANY_RX_DESCS = 6, + + ENA_REGS_RESET_INIT_ERR = 7, + + ENA_REGS_RESET_DRIVER_INVALID_STATE = 8, + + ENA_REGS_RESET_OS_TRIGGER = 9, + + ENA_REGS_RESET_OS_NETDEV_WD = 10, + + ENA_REGS_RESET_SHUTDOWN = 11, + + ENA_REGS_RESET_USER_TRIGGER = 12, + + ENA_REGS_RESET_GENERIC = 13, +}; + /* ena_registers offsets */ #define ENA_REGS_VERSION_OFF 0x0 #define ENA_REGS_CONTROLLER_VERSION_OFF 0x4 @@ -104,6 +134,8 @@ #define ENA_REGS_DEV_CTL_QUIESCENT_MASK 0x4 #define ENA_REGS_DEV_CTL_IO_RESUME_SHIFT 3 #define ENA_REGS_DEV_CTL_IO_RESUME_MASK 0x8 +#define ENA_REGS_DEV_CTL_RESET_REASON_SHIFT 28 +#define ENA_REGS_DEV_CTL_RESET_REASON_MASK 0xf0000000 /* dev_sts register */ #define ENA_REGS_DEV_STS_READY_MASK 0x1