diff options
| -rw-r--r-- | drivers/net/cxgb3/adapter.h | 1 | ||||
| -rw-r--r-- | drivers/net/cxgb3/common.h | 1 | ||||
| -rw-r--r-- | drivers/net/cxgb3/cxgb3_main.c | 164 | ||||
| -rw-r--r-- | drivers/net/cxgb3/sge.c | 9 | ||||
| -rw-r--r-- | drivers/net/cxgb3/t3_hw.c | 4 |
5 files changed, 119 insertions, 60 deletions
diff --git a/drivers/net/cxgb3/adapter.h b/drivers/net/cxgb3/adapter.h index e9da28597233..02dd69b90abe 100644 --- a/drivers/net/cxgb3/adapter.h +++ b/drivers/net/cxgb3/adapter.h @@ -240,6 +240,7 @@ struct adapter { unsigned int check_task_cnt; struct delayed_work adap_check_task; struct work_struct ext_intr_handler_task; + struct work_struct fatal_error_handler_task; struct dentry *debugfs_root; diff --git a/drivers/net/cxgb3/common.h b/drivers/net/cxgb3/common.h index 9ecf8a6dc97f..d6dbcd403a7d 100644 --- a/drivers/net/cxgb3/common.h +++ b/drivers/net/cxgb3/common.h @@ -698,6 +698,7 @@ int t3_check_fw_version(struct adapter *adapter, int *must_load); int t3_init_hw(struct adapter *adapter, u32 fw_params); void mac_prep(struct cmac *mac, struct adapter *adapter, int index); void early_hw_init(struct adapter *adapter, const struct adapter_info *ai); +int t3_reset_adapter(struct adapter *adapter); int t3_prep_adapter(struct adapter *adapter, const struct adapter_info *ai, int reset); int t3_replay_prep_adapter(struct adapter *adapter); diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c index d355c826b9b9..0e51d49842fa 100644 --- a/drivers/net/cxgb3/cxgb3_main.c +++ b/drivers/net/cxgb3/cxgb3_main.c @@ -892,6 +892,13 @@ static int cxgb_up(struct adapter *adap) goto out; } + /* + * Clear interrupts now to catch errors if t3_init_hw fails. + * We clear them again later as initialization may trigger + * conditions that can interrupt. + */ + t3_intr_clear(adap); + err = t3_init_hw(adap, 0); if (err) goto out; @@ -1101,9 +1108,9 @@ static int cxgb_close(struct net_device *dev) netif_carrier_off(dev); t3_mac_disable(&pi->mac, MAC_DIRECTION_TX | MAC_DIRECTION_RX); - spin_lock(&adapter->work_lock); /* sync with update task */ + spin_lock_irq(&adapter->work_lock); /* sync with update task */ clear_bit(pi->port_id, &adapter->open_device_map); - spin_unlock(&adapter->work_lock); + spin_unlock_irq(&adapter->work_lock); if (!(adapter->open_device_map & PORT_MASK)) cancel_rearming_delayed_workqueue(cxgb3_wq, @@ -2356,10 +2363,10 @@ static void t3_adap_check_task(struct work_struct *work) check_t3b2_mac(adapter); /* Schedule the next check update if any port is active. */ - spin_lock(&adapter->work_lock); + spin_lock_irq(&adapter->work_lock); if (adapter->open_device_map & PORT_MASK) schedule_chk_task(adapter); - spin_unlock(&adapter->work_lock); + spin_unlock_irq(&adapter->work_lock); } /* @@ -2404,6 +2411,96 @@ void t3_os_ext_intr_handler(struct adapter *adapter) spin_unlock(&adapter->work_lock); } +static int t3_adapter_error(struct adapter *adapter, int reset) +{ + int i, ret = 0; + + /* Stop all ports */ + for_each_port(adapter, i) { + struct net_device *netdev = adapter->port[i]; + + if (netif_running(netdev)) + cxgb_close(netdev); + } + + if (is_offload(adapter) && + test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) + offload_close(&adapter->tdev); + + /* Stop SGE timers */ + t3_stop_sge_timers(adapter); + + adapter->flags &= ~FULL_INIT_DONE; + + if (reset) + ret = t3_reset_adapter(adapter); + + pci_disable_device(adapter->pdev); + + return ret; +} + +static int t3_reenable_adapter(struct adapter *adapter) +{ + if (pci_enable_device(adapter->pdev)) { + dev_err(&adapter->pdev->dev, + "Cannot re-enable PCI device after reset.\n"); + goto err; + } + pci_set_master(adapter->pdev); + pci_restore_state(adapter->pdev); + + /* Free sge resources */ + t3_free_sge_resources(adapter); + + if (t3_replay_prep_adapter(adapter)) + goto err; + + return 0; +err: + return -1; +} + +static void t3_resume_ports(struct adapter *adapter) +{ + int i; + + /* Restart the ports */ + for_each_port(adapter, i) { + struct net_device *netdev = adapter->port[i]; + + if (netif_running(netdev)) { + if (cxgb_open(netdev)) { + dev_err(&adapter->pdev->dev, + "can't bring device back up" + " after reset\n"); + continue; + } + } + } +} + +/* + * processes a fatal error. + * Bring the ports down, reset the chip, bring the ports back up. + */ +static void fatal_error_task(struct work_struct *work) +{ + struct adapter *adapter = container_of(work, struct adapter, + fatal_error_handler_task); + int err = 0; + + rtnl_lock(); + err = t3_adapter_error(adapter, 1); + if (!err) + err = t3_reenable_adapter(adapter); + if (!err) + t3_resume_ports(adapter); + + CH_ALERT(adapter, "adapter reset %s\n", err ? "failed" : "succeeded"); + rtnl_unlock(); +} + void t3_fatal_err(struct adapter *adapter) { unsigned int fw_status[4]; @@ -2414,7 +2511,11 @@ void t3_fatal_err(struct adapter *adapter) t3_write_reg(adapter, A_XGM_RX_CTRL, 0); t3_write_reg(adapter, XGM_REG(A_XGM_TX_CTRL, 1), 0); t3_write_reg(adapter, XGM_REG(A_XGM_RX_CTRL, 1), 0); + + spin_lock(&adapter->work_lock); t3_intr_disable(adapter); + queue_work(cxgb3_wq, &adapter->fatal_error_handler_task); + spin_unlock(&adapter->work_lock); } CH_ALERT(adapter, "encountered fatal error, operation suspended\n"); if (!t3_cim_ctl_blk_read(adapter, 0xa0, 4, fw_status)) @@ -2436,26 +2537,9 @@ static pci_ers_result_t t3_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) { struct adapter *adapter = pci_get_drvdata(pdev); - int i; - - /* Stop all ports */ - for_each_port(adapter, i) { - struct net_device *netdev = adapter->port[i]; - - if (netif_running(netdev)) - cxgb_close(netdev); - } - - if (is_offload(adapter) && - test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) - offload_close(&adapter->tdev); - - /* Stop SGE timers */ - t3_stop_sge_timers(adapter); - - adapter->flags &= ~FULL_INIT_DONE; + int ret; - pci_disable_device(pdev); + ret = t3_adapter_error(adapter, 0); /* Request a slot reset. */ return PCI_ERS_RESULT_NEED_RESET; @@ -2471,22 +2555,9 @@ static pci_ers_result_t t3_io_slot_reset(struct pci_dev *pdev) { struct adapter *adapter = pci_get_drvdata(pdev); - if (pci_enable_device(pdev)) { - dev_err(&pdev->dev, - "Cannot re-enable PCI device after reset.\n"); - goto err; - } - pci_set_master(pdev); - pci_restore_state(pdev); - - /* Free sge resources */ - t3_free_sge_resources(adapter); - - if (t3_replay_prep_adapter(adapter)) - goto err; + if (!t3_reenable_adapter(adapter)) + return PCI_ERS_RESULT_RECOVERED; - return PCI_ERS_RESULT_RECOVERED; -err: return PCI_ERS_RESULT_DISCONNECT; } @@ -2500,22 +2571,8 @@ err: static void t3_io_resume(struct pci_dev *pdev) { struct adapter *adapter = pci_get_drvdata(pdev); - int i; - - /* Restart the ports */ - for_each_port(adapter, i) { - struct net_device *netdev = adapter->port[i]; - if (netif_running(netdev)) { - if (cxgb_open(netdev)) { - dev_err(&pdev->dev, - "can't bring device back up" - " after reset\n"); - continue; - } - netif_device_attach(netdev); - } - } + t3_resume_ports(adapter); } static struct pci_error_handlers t3_err_handler = { @@ -2664,6 +2721,7 @@ static int __devinit init_one(struct pci_dev *pdev, INIT_LIST_HEAD(&adapter->adapter_list); INIT_WORK(&adapter->ext_intr_handler_task, ext_intr_task); + INIT_WORK(&adapter->fatal_error_handler_task, fatal_error_task); INIT_DELAYED_WORK(&adapter->adap_check_task, t3_adap_check_task); for (i = 0; i < ai->nports; ++i) { diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c index 7346a8e26da1..87919419b707 100644 --- a/drivers/net/cxgb3/sge.c +++ b/drivers/net/cxgb3/sge.c @@ -351,7 +351,8 @@ static void free_rx_bufs(struct pci_dev *pdev, struct sge_fl *q) pci_unmap_single(pdev, pci_unmap_addr(d, dma_addr), q->buf_size, PCI_DMA_FROMDEVICE); if (q->use_pages) { - put_page(d->pg_chunk.page); + if (d->pg_chunk.page) + put_page(d->pg_chunk.page); d->pg_chunk.page = NULL; } else { kfree_skb(d->skb); @@ -583,7 +584,7 @@ static void t3_reset_qset(struct sge_qset *q) memset(q->fl, 0, sizeof(struct sge_fl) * SGE_RXQ_PER_SET); memset(q->txq, 0, sizeof(struct sge_txq) * SGE_TXQ_PER_SET); q->txq_stopped = 0; - memset(&q->tx_reclaim_timer, 0, sizeof(q->tx_reclaim_timer)); + q->tx_reclaim_timer.function = NULL; /* for t3_stop_sge_timers() */ kfree(q->lro_frag_tbl); q->lro_nfrags = q->lro_frag_len = 0; } @@ -2840,9 +2841,7 @@ int t3_sge_alloc_qset(struct adapter *adapter, unsigned int id, int nports, struct net_lro_mgr *lro_mgr = &q->lro_mgr; init_qset_cntxt(q, id); - init_timer(&q->tx_reclaim_timer); - q->tx_reclaim_timer.data = (unsigned long)q; - q->tx_reclaim_timer.function = sge_timer_cb; + setup_timer(&q->tx_reclaim_timer, sge_timer_cb, (unsigned long)q); q->fl[0].desc = alloc_ring(adapter->pdev, p->fl_size, sizeof(struct rx_desc), diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c index 04c0e90119af..33470c79ac1c 100644 --- a/drivers/net/cxgb3/t3_hw.c +++ b/drivers/net/cxgb3/t3_hw.c @@ -1221,7 +1221,7 @@ struct intr_info { unsigned int mask; /* bits to check in interrupt status */ const char *msg; /* message to print or NULL */ short stat_idx; /* stat counter to increment or -1 */ - unsigned short fatal:1; /* whether the condition reported is fatal */ + unsigned short fatal; /* whether the condition reported is fatal */ }; /** @@ -3488,7 +3488,7 @@ void early_hw_init(struct adapter *adapter, const struct adapter_info *ai) * Older PCIe cards lose their config space during reset, PCI-X * ones don't. */ -static int t3_reset_adapter(struct adapter *adapter) +int t3_reset_adapter(struct adapter *adapter) { int i, save_and_restore_pcie = adapter->params.rev < T3_REV_B2 && is_pcie(adapter); |