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netxen: add suspend resume support 

Detach network interface on PCI suspend and recreate hardware
context after resumes.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dhananjay Phadke 2009-03-13 14:52:02 +00:00 committed by David S. Miller
parent fbb52f2272
commit 0b72e659a1
3 changed files with 102 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/netxen/netxen_nic.h
View File

@ -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);

17
drivers/net/netxen/netxen_nic_hw.c
View File

@ -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;
}

102
drivers/net/netxen/netxen_nic_main.c
View File

@ -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 */