diff options
| -rw-r--r-- | drivers/net/igb/igb.h | 4 | ||||
| -rw-r--r-- | drivers/net/igb/igb_main.c | 47 |
2 files changed, 45 insertions, 6 deletions
diff --git a/drivers/net/igb/igb.h b/drivers/net/igb/igb.h index 6b2e7d351d6..0eecb8b2abd 100644 --- a/drivers/net/igb/igb.h +++ b/drivers/net/igb/igb.h @@ -271,6 +271,10 @@ struct igb_adapter { unsigned int msi_enabled; u32 eeprom_wol; + + /* for ioport free */ + int bars; + int need_ioport; }; enum e1000_state_t { diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 7b6b780dc8a..e13b8db67b7 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -820,6 +820,21 @@ void igb_reset(struct igb_adapter *adapter) } /** + * igb_is_need_ioport - determine if an adapter needs ioport resources or not + * @pdev: PCI device information struct + * + * Returns true if an adapter needs ioport resources + **/ +static int igb_is_need_ioport(struct pci_dev *pdev) +{ + switch (pdev->device) { + /* Currently there are no adapters that need ioport resources */ + default: + return false; + } +} + +/** * igb_probe - Device Initialization Routine * @pdev: PCI device information struct * @ent: entry in igb_pci_tbl @@ -843,8 +858,17 @@ static int __devinit igb_probe(struct pci_dev *pdev, u16 eeprom_data = 0; u16 eeprom_apme_mask = IGB_EEPROM_APME; u32 part_num; + int bars, need_ioport; - err = pci_enable_device(pdev); + /* do not allocate ioport bars when not needed */ + need_ioport = igb_is_need_ioport(pdev); + if (need_ioport) { + bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); + err = pci_enable_device(pdev); + } else { + bars = pci_select_bars(pdev, IORESOURCE_MEM); + err = pci_enable_device_mem(pdev); + } if (err) return err; @@ -866,7 +890,7 @@ static int __devinit igb_probe(struct pci_dev *pdev, } } - err = pci_request_regions(pdev, igb_driver_name); + err = pci_request_selected_regions(pdev, bars, igb_driver_name); if (err) goto err_pci_reg; @@ -887,6 +911,8 @@ static int __devinit igb_probe(struct pci_dev *pdev, hw = &adapter->hw; hw->back = adapter; adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE; + adapter->bars = bars; + adapter->need_ioport = need_ioport; mmio_start = pci_resource_start(pdev, 0); mmio_len = pci_resource_len(pdev, 0); @@ -1127,7 +1153,7 @@ err_hw_init: err_ioremap: free_netdev(netdev); err_alloc_etherdev: - pci_release_regions(pdev); + pci_release_selected_regions(pdev, bars); err_pci_reg: err_dma: pci_disable_device(pdev); @@ -1174,7 +1200,7 @@ static void __devexit igb_remove(struct pci_dev *pdev) iounmap(adapter->hw.hw_addr); if (adapter->hw.flash_address) iounmap(adapter->hw.flash_address); - pci_release_regions(pdev); + pci_release_selected_regions(pdev, adapter->bars); free_netdev(netdev); @@ -3975,7 +4001,11 @@ static int igb_resume(struct pci_dev *pdev) pci_set_power_state(pdev, PCI_D0); pci_restore_state(pdev); - err = pci_enable_device(pdev); + + if (adapter->need_ioport) + err = pci_enable_device(pdev); + else + err = pci_enable_device_mem(pdev); if (err) { dev_err(&pdev->dev, "igb: Cannot enable PCI device from suspend\n"); @@ -4078,8 +4108,13 @@ static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) struct net_device *netdev = pci_get_drvdata(pdev); struct igb_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; + int err; - if (pci_enable_device(pdev)) { + if (adapter->need_ioport) + err = pci_enable_device(pdev); + else + err = pci_enable_device_mem(pdev); + if (err) { dev_err(&pdev->dev, "Cannot re-enable PCI device after reset.\n"); return PCI_ERS_RESULT_DISCONNECT; |