be2net: Support for WoL using magic packet after suspend.

Add support for WOL using Magic Packet after suspend is done.

Signed-off-by: Sarveshwar Bandi <sarveshwarb@serverengines.com>
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 44 insertions, 0 deletions

diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index f24ac4b5ce8f..84f686f41b53 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -1659,6 +1659,44 @@ ret_sts:
         return status;
 }
 
+static int be_setup_wol(struct be_adapter *adapter, bool enable)
+{
+        struct be_dma_mem cmd;
+        int status = 0;
+        u8 mac[ETH_ALEN];
+
+        memset(mac, 0, ETH_ALEN);
+
+        cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
+        cmd.va = pci_alloc_consistent(adapter->pdev, cmd.size, &cmd.dma);
+        if (cmd.va == NULL)
+                return -1;
+        memset(cmd.va, 0, cmd.size);
+
+        if (enable) {
+                status = pci_write_config_dword(adapter->pdev,
+                        PCICFG_PM_CONTROL_OFFSET, PCICFG_PM_CONTROL_MASK);
+                if (status) {
+                        dev_err(&adapter->pdev->dev,
+                                "Could not enable Wake-on-lan \n");
+                        pci_free_consistent(adapter->pdev, cmd.size, cmd.va,
+                                        cmd.dma);
+                        return status;
+                }
+                status = be_cmd_enable_magic_wol(adapter,
+                                adapter->netdev->dev_addr, &cmd);
+                pci_enable_wake(adapter->pdev, PCI_D3hot, 1);
+                pci_enable_wake(adapter->pdev, PCI_D3cold, 1);
+        } else {
+                status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
+                pci_enable_wake(adapter->pdev, PCI_D3hot, 0);
+                pci_enable_wake(adapter->pdev, PCI_D3cold, 0);
+        }
+
+        pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);
+        return status;
+}
+
 static int be_setup(struct be_adapter *adapter)
 {
         struct net_device *netdev = adapter->netdev;
@@ -2282,6 +2320,9 @@ static int be_suspend(struct pci_dev *pdev, pm_message_t state)
         struct be_adapter *adapter = pci_get_drvdata(pdev);
         struct net_device *netdev =  adapter->netdev;
 
+        if (adapter->wol)
+                be_setup_wol(adapter, true);
+
         netif_device_detach(netdev);
         if (netif_running(netdev)) {
                 rtnl_lock();
@@ -2324,6 +2365,9 @@ static int be_resume(struct pci_dev *pdev)
                 rtnl_unlock();
         }
         netif_device_attach(netdev);
+
+        if (adapter->wol)
+                be_setup_wol(adapter, false);
         return 0;
 }