diff options
Diffstat (limited to 'drivers/net/netxen/netxen_nic_main.c')
| -rw-r--r-- | drivers/net/netxen/netxen_nic_main.c | 123 |
1 files changed, 40 insertions, 83 deletions
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c index f69807c9432..3c424a88d8f 100644 --- a/drivers/net/netxen/netxen_nic_main.c +++ b/drivers/net/netxen/netxen_nic_main.c @@ -149,76 +149,18 @@ static uint32_t msi_tgt_status[8] = { static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG; -static void netxen_nic_disable_int(struct netxen_adapter *adapter) +static inline void netxen_nic_disable_int(struct netxen_adapter *adapter) { - u32 mask = 0x7ff; - int retries = 32; - int pci_fn = adapter->ahw.pci_func; - - if (adapter->msi_mode != MSI_MODE_MULTIFUNC) - adapter->pci_write_normalize(adapter, - adapter->crb_intr_mask, 0); - - if (adapter->intr_scheme != -1 && - adapter->intr_scheme != INTR_SCHEME_PERPORT) - adapter->pci_write_immediate(adapter, ISR_INT_MASK, mask); - - if (!NETXEN_IS_MSI_FAMILY(adapter)) { - do { - adapter->pci_write_immediate(adapter, - adapter->legacy_intr.tgt_status_reg, - 0xffffffff); - mask = adapter->pci_read_immediate(adapter, - ISR_INT_VECTOR); - if (!(mask & 0x80)) - break; - udelay(10); - } while (--retries); - - if (!retries) { - printk(KERN_NOTICE "%s: Failed to disable interrupt\n", - netxen_nic_driver_name); - } - } else { - if (adapter->msi_mode == MSI_MODE_MULTIFUNC) { - adapter->pci_write_immediate(adapter, - msi_tgt_status[pci_fn], 0xffffffff); - } - } + adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0); } -static void netxen_nic_enable_int(struct netxen_adapter *adapter) +static inline void netxen_nic_enable_int(struct netxen_adapter *adapter) { - u32 mask; - - if (adapter->intr_scheme != -1 && - adapter->intr_scheme != INTR_SCHEME_PERPORT) { - switch (adapter->ahw.board_type) { - case NETXEN_NIC_GBE: - mask = 0x77b; - break; - case NETXEN_NIC_XGBE: - mask = 0x77f; - break; - default: - mask = 0x7ff; - break; - } - - adapter->pci_write_immediate(adapter, ISR_INT_MASK, mask); - } - adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1); - if (!NETXEN_IS_MSI_FAMILY(adapter)) { - mask = 0xbff; - if (adapter->intr_scheme == INTR_SCHEME_PERPORT) - adapter->pci_write_immediate(adapter, - adapter->legacy_intr.tgt_mask_reg, mask); - else - adapter->pci_write_normalize(adapter, - CRB_INT_VECTOR, 0); - } + if (!NETXEN_IS_MSI_FAMILY(adapter)) + adapter->pci_write_immediate(adapter, + adapter->legacy_intr.tgt_mask_reg, 0xfbff); } static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id) @@ -1086,6 +1028,15 @@ static int netxen_nic_open(struct net_device *netdev) goto err_out_free_sw; } + if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) || + (adapter->intr_scheme != INTR_SCHEME_PERPORT)) { + printk(KERN_ERR "%s: Firmware interrupt scheme is " + "incompatible with driver\n", + netdev->name); + adapter->driver_mismatch = 1; + goto err_out_free_hw; + } + if (adapter->fw_major < 4) { adapter->crb_addr_cmd_producer = crb_cmd_producer[adapter->portnum]; @@ -1147,6 +1098,7 @@ err_out_free_irq: free_irq(adapter->irq, adapter); err_out_free_rxbuf: netxen_release_rx_buffers(adapter); +err_out_free_hw: netxen_free_hw_resources(adapter); err_out_free_sw: netxen_free_sw_resources(adapter); @@ -1536,18 +1488,9 @@ struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev) return stats; } -static inline void -netxen_handle_int(struct netxen_adapter *adapter) -{ - netxen_nic_disable_int(adapter); - napi_schedule(&adapter->napi); -} - static irqreturn_t netxen_intr(int irq, void *data) { struct netxen_adapter *adapter = data; - u32 our_int = 0; - u32 status = 0; status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR); @@ -1562,22 +1505,32 @@ static irqreturn_t netxen_intr(int irq, void *data) if (!ISR_LEGACY_INT_TRIGGERED(status)) return IRQ_NONE; - } else if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { + } else { + unsigned long our_int = 0; our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR); + /* not our interrupt */ - if ((our_int & (0x80 << adapter->portnum)) == 0) + if (!test_and_clear_bit((7 + adapter->portnum), &our_int)) return IRQ_NONE; - if (adapter->intr_scheme == INTR_SCHEME_PERPORT) { - /* claim interrupt */ - adapter->pci_write_normalize(adapter, - CRB_INT_VECTOR, - our_int & ~((u32)(0x80 << adapter->portnum))); - } + /* claim interrupt */ + adapter->pci_write_normalize(adapter, + CRB_INT_VECTOR, (our_int & 0xffffffff)); } - netxen_handle_int(adapter); + /* clear interrupt */ + if (adapter->fw_major < 4) + netxen_nic_disable_int(adapter); + + adapter->pci_write_immediate(adapter, + adapter->legacy_intr.tgt_status_reg, + 0xffffffff); + /* read twice to ensure write is flushed */ + adapter->pci_read_immediate(adapter, ISR_INT_VECTOR); + adapter->pci_read_immediate(adapter, ISR_INT_VECTOR); + + napi_schedule(&adapter->napi); return IRQ_HANDLED; } @@ -1586,7 +1539,11 @@ static irqreturn_t netxen_msi_intr(int irq, void *data) { struct netxen_adapter *adapter = data; - netxen_handle_int(adapter); + /* clear interrupt */ + adapter->pci_write_immediate(adapter, + msi_tgt_status[adapter->ahw.pci_func], 0xffffffff); + + napi_schedule(&adapter->napi); return IRQ_HANDLED; } |