From 0b72e659a10ec50acbef90756bf04177b66c8266 Mon Sep 17 00:00:00 2001 From: Dhananjay Phadke Date: Fri, 13 Mar 2009 14:52:02 +0000 Subject: [PATCH] netxen: add suspend resume support Detach network interface on PCI suspend and recreate hardware context after resumes. Signed-off-by: Dhananjay Phadke Signed-off-by: David S. Miller --- drivers/net/netxen/netxen_nic.h | 1 + drivers/net/netxen/netxen_nic_hw.c | 17 +++++ drivers/net/netxen/netxen_nic_main.c | 102 ++++++++++++++++++++++----- 3 files changed, 102 insertions(+), 18 deletions(-) diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h index 618507074bdd..75cb30f27ae2 100644 --- a/drivers/net/netxen/netxen_nic.h +++ b/drivers/net/netxen/netxen_nic.h @@ -1389,6 +1389,7 @@ void netxen_nic_read_w1(struct netxen_adapter *adapter, u32 index, u32 *value); int netxen_nic_get_board_info(struct netxen_adapter *adapter); void netxen_nic_get_firmware_info(struct netxen_adapter *adapter); +int netxen_nic_wol_supported(struct netxen_adapter *adapter); int netxen_nic_hw_read_wx_128M(struct netxen_adapter *adapter, ulong off, void *data, int len); diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c index 8db4ac344146..c8faa53d27af 100644 --- a/drivers/net/netxen/netxen_nic_hw.c +++ b/drivers/net/netxen/netxen_nic_hw.c @@ -2320,3 +2320,20 @@ void netxen_nic_get_firmware_info(struct netxen_adapter *adapter) } } +int +netxen_nic_wol_supported(struct netxen_adapter *adapter) +{ + u32 wol_cfg; + + if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) + return 0; + + wol_cfg = netxen_nic_reg_read(adapter, NETXEN_WOL_CONFIG_NV); + if (wol_cfg & (1UL << adapter->portnum)) { + wol_cfg = netxen_nic_reg_read(adapter, NETXEN_WOL_CONFIG); + if (wol_cfg & (1 << adapter->portnum)) + return 1; + } + + return 0; +} diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c index 9445277321d7..555b4596b0fe 100644 --- a/drivers/net/netxen/netxen_nic_main.c +++ b/drivers/net/netxen/netxen_nic_main.c @@ -643,6 +643,18 @@ netxen_start_firmware(struct netxen_adapter *adapter) int val, err, first_boot; struct pci_dev *pdev = adapter->pdev; + int first_driver = 0; + if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) { + if (adapter->ahw.pci_func == 0) + first_driver = 1; + } else { + if (adapter->portnum == 0) + first_driver = 1; + } + + if (!first_driver) + return 0; + first_boot = adapter->pci_read_normalize(adapter, NETXEN_CAM_RAM(0x1fc)); @@ -859,7 +871,6 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) struct net_device *netdev = NULL; struct netxen_adapter *adapter = NULL; int i = 0, err; - int first_driver; int pci_func_id = PCI_FUNC(pdev->devfn); uint8_t revision_id; @@ -978,20 +989,9 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) */ netxen_check_options(adapter); - first_driver = 0; - if (NX_IS_REVISION_P3(revision_id)) { - if (adapter->ahw.pci_func == 0) - first_driver = 1; - } else { - if (adapter->portnum == 0) - first_driver = 1; - } - - if (first_driver) { - err = netxen_start_firmware(adapter); - if (err) - goto err_out_iounmap; - } + err = netxen_start_firmware(adapter); + if (err) + goto err_out_iounmap; nx_update_dma_mask(adapter); @@ -1062,8 +1062,7 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) err_out_disable_msi: netxen_teardown_intr(adapter); - if (first_driver) - netxen_free_adapter_offload(adapter); + netxen_free_adapter_offload(adapter); err_out_iounmap: netxen_cleanup_pci_map(adapter); @@ -1114,6 +1113,71 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev) free_netdev(netdev); } +static int +netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state) +{ + + struct netxen_adapter *adapter = pci_get_drvdata(pdev); + struct net_device *netdev = adapter->netdev; + + netif_device_detach(netdev); + + if (netif_running(netdev)) + netxen_nic_down(adapter, netdev); + + if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) + netxen_nic_detach(adapter); + + pci_save_state(pdev); + + if (netxen_nic_wol_supported(adapter)) { + pci_enable_wake(pdev, PCI_D3cold, 1); + pci_enable_wake(pdev, PCI_D3hot, 1); + } + + pci_disable_device(pdev); + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + return 0; +} + +static int +netxen_nic_resume(struct pci_dev *pdev) +{ + struct netxen_adapter *adapter = pci_get_drvdata(pdev); + struct net_device *netdev = adapter->netdev; + int err; + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + + err = pci_enable_device(pdev); + if (err) + return err; + + adapter->curr_window = 255; + + err = netxen_start_firmware(adapter); + if (err) { + dev_err(&pdev->dev, "failed to start firmware\n"); + return err; + } + + if (netif_running(netdev)) { + err = netxen_nic_attach(adapter); + if (err) + return err; + + err = netxen_nic_up(adapter, netdev); + if (err) + return err; + + netif_device_attach(netdev); + } + + return 0; +} + static int netxen_nic_open(struct net_device *netdev) { struct netxen_adapter *adapter = netdev_priv(netdev); @@ -1649,7 +1713,9 @@ static struct pci_driver netxen_driver = { .name = netxen_nic_driver_name, .id_table = netxen_pci_tbl, .probe = netxen_nic_probe, - .remove = __devexit_p(netxen_nic_remove) + .remove = __devexit_p(netxen_nic_remove), + .suspend = netxen_nic_suspend, + .resume = netxen_nic_resume }; /* Driver Registration on NetXen card */ -- 2.20.1