net: hns3: support wake on lan configuration and query

The HNS3 driver supports Wake-on-LAN, which can wake up
the server from power off state to power on state by magic
packet or magic security packet.

ChangeLog:
v1->v2:
Deleted the debugfs function that overlaps with the ethtool function
from suggestion of Andrew Lunn.

v2->v3:
Return the wol configuration stored in driver,
suggested by Alexander H Duyck.

v3->v4:
Add a helper to go from netdev to the local struct,
suggested by Simon Horman and Jakub Kicinski.

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Hao Lan <lanhao@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 130 insertions, 0 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index c3851a6e10c0..4fb5406c1951 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -11522,6 +11522,124 @@ static void hclge_uninit_rxd_adv_layout(struct hclge_dev *hdev)
 		hclge_write_dev(&hdev->hw, HCLGE_RXD_ADV_LAYOUT_EN_REG, 0);
 }
 
+static struct hclge_wol_info *hclge_get_wol_info(struct hnae3_handle *handle)
+{
+	struct hclge_vport *vport = hclge_get_vport(handle);
+
+	return &vport->back->hw.mac.wol;
+}
+
+static int hclge_get_wol_supported_mode(struct hclge_dev *hdev,
+					u32 *wol_supported)
+{
+	struct hclge_query_wol_supported_cmd *wol_supported_cmd;
+	struct hclge_desc desc;
+	int ret;
+
+	hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_WOL_GET_SUPPORTED_MODE,
+				   true);
+	wol_supported_cmd = (struct hclge_query_wol_supported_cmd *)desc.data;
+
+	ret = hclge_cmd_send(&hdev->hw, &desc, 1);
+	if (ret) {
+		dev_err(&hdev->pdev->dev,
+			"failed to query wol supported, ret = %d\n", ret);
+		return ret;
+	}
+
+	*wol_supported = le32_to_cpu(wol_supported_cmd->supported_wake_mode);
+
+	return 0;
+}
+
+static int hclge_set_wol_cfg(struct hclge_dev *hdev,
+			     struct hclge_wol_info *wol_info)
+{
+	struct hclge_wol_cfg_cmd *wol_cfg_cmd;
+	struct hclge_desc desc;
+	int ret;
+
+	hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_WOL_CFG, false);
+	wol_cfg_cmd = (struct hclge_wol_cfg_cmd *)desc.data;
+	wol_cfg_cmd->wake_on_lan_mode = cpu_to_le32(wol_info->wol_current_mode);
+	wol_cfg_cmd->sopass_size = wol_info->wol_sopass_size;
+	memcpy(wol_cfg_cmd->sopass, wol_info->wol_sopass, SOPASS_MAX);
+
+	ret = hclge_cmd_send(&hdev->hw, &desc, 1);
+	if (ret)
+		dev_err(&hdev->pdev->dev,
+			"failed to set wol config, ret = %d\n", ret);
+
+	return ret;
+}
+
+static int hclge_update_wol(struct hclge_dev *hdev)
+{
+	struct hclge_wol_info *wol_info = &hdev->hw.mac.wol;
+
+	if (!hnae3_ae_dev_wol_supported(hdev->ae_dev))
+		return 0;
+
+	return hclge_set_wol_cfg(hdev, wol_info);
+}
+
+static int hclge_init_wol(struct hclge_dev *hdev)
+{
+	struct hclge_wol_info *wol_info = &hdev->hw.mac.wol;
+	int ret;
+
+	if (!hnae3_ae_dev_wol_supported(hdev->ae_dev))
+		return 0;
+
+	memset(wol_info, 0, sizeof(struct hclge_wol_info));
+	ret = hclge_get_wol_supported_mode(hdev,
+					   &wol_info->wol_support_mode);
+	if (ret) {
+		wol_info->wol_support_mode = 0;
+		return ret;
+	}
+
+	return hclge_update_wol(hdev);
+}
+
+static void hclge_get_wol(struct hnae3_handle *handle,
+			  struct ethtool_wolinfo *wol)
+{
+	struct hclge_wol_info *wol_info = hclge_get_wol_info(handle);
+
+	wol->supported = wol_info->wol_support_mode;
+	wol->wolopts = wol_info->wol_current_mode;
+	if (wol_info->wol_current_mode & WAKE_MAGICSECURE)
+		memcpy(wol->sopass, wol_info->wol_sopass, SOPASS_MAX);
+}
+
+static int hclge_set_wol(struct hnae3_handle *handle,
+			 struct ethtool_wolinfo *wol)
+{
+	struct hclge_wol_info *wol_info = hclge_get_wol_info(handle);
+	struct hclge_vport *vport = hclge_get_vport(handle);
+	u32 wol_mode;
+	int ret;
+
+	wol_mode = wol->wolopts;
+	if (wol_mode & ~wol_info->wol_support_mode)
+		return -EINVAL;
+
+	wol_info->wol_current_mode = wol_mode;
+	if (wol_mode & WAKE_MAGICSECURE) {
+		memcpy(wol_info->wol_sopass, wol->sopass, SOPASS_MAX);
+		wol_info->wol_sopass_size = SOPASS_MAX;
+	} else {
+		wol_info->wol_sopass_size = 0;
+	}
+
+	ret = hclge_set_wol_cfg(vport->back, wol_info);
+	if (ret)
+		wol_info->wol_current_mode = 0;
+
+	return ret;
+}
+
 static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
 {
 	struct pci_dev *pdev = ae_dev->pdev;
@@ -11718,6 +11836,11 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
 	/* Enable MISC vector(vector0) */
 	hclge_enable_vector(&hdev->misc_vector, true);
 
+	ret = hclge_init_wol(hdev);
+	if (ret)
+		dev_warn(&pdev->dev,
+			 "failed to wake on lan init, ret = %d\n", ret);
+
 	hclge_state_init(hdev);
 	hdev->last_reset_time = jiffies;
 
@@ -12096,6 +12219,11 @@ static int hclge_reset_ae_dev(struct hnae3_ae_dev *ae_dev)
 
 	hclge_init_rxd_adv_layout(hdev);
 
+	ret = hclge_update_wol(hdev);
+	if (ret)
+		dev_warn(&pdev->dev,
+			 "failed to update wol config, ret = %d\n", ret);
+
 	dev_info(&pdev->dev, "Reset done, %s driver initialization finished.\n",
 		 HCLGE_DRIVER_NAME);
 
@@ -13142,6 +13270,8 @@ static const struct hnae3_ae_ops hclge_ops = {
 	.get_link_diagnosis_info = hclge_get_link_diagnosis_info,
 	.clean_vf_config = hclge_clean_vport_config,
 	.get_dscp_prio = hclge_get_dscp_prio,
+	.get_wol = hclge_get_wol,
+	.set_wol = hclge_set_wol,
 };
 
 static struct hnae3_ae_algo ae_algo = {