Merge branch 'hns3-pm_ops'

Huazhong Tan says:

====================
net: hns3: add support for pm_ops

This series adds support for pm_ops in the HNS3 ethernet driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hnae3.h

@@ -474,8 +474,9 @@ struct hnae3_ae_dev {
 struct hnae3_ae_ops {
 	int (*init_ae_dev)(struct hnae3_ae_dev *ae_dev);
 	void (*uninit_ae_dev)(struct hnae3_ae_dev *ae_dev);
-	void (*flr_prepare)(struct hnae3_ae_dev *ae_dev);
-	void (*flr_done)(struct hnae3_ae_dev *ae_dev);
+	void (*reset_prepare)(struct hnae3_ae_dev *ae_dev,
+			      enum hnae3_reset_type rst_type);
+	void (*reset_done)(struct hnae3_ae_dev *ae_dev);
 	int (*init_client_instance)(struct hnae3_client *client,
 				    struct hnae3_ae_dev *ae_dev);
 	void (*uninit_client_instance)(struct hnae3_client *client,

drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

@@ -2365,6 +2365,32 @@ static void hns3_shutdown(struct pci_dev *pdev)
 		pci_set_power_state(pdev, PCI_D3hot);
 }
 
+static int __maybe_unused hns3_suspend(struct device *dev)
+{
+	struct hnae3_ae_dev *ae_dev = dev_get_drvdata(dev);
+
+	if (hns3_is_phys_func(ae_dev->pdev)) {
+		dev_info(dev, "Begin to suspend.\n");
+		if (ae_dev && ae_dev->ops && ae_dev->ops->reset_prepare)
+			ae_dev->ops->reset_prepare(ae_dev, HNAE3_FUNC_RESET);
+	}
+
+	return 0;
+}
+
+static int __maybe_unused hns3_resume(struct device *dev)
+{
+	struct hnae3_ae_dev *ae_dev = dev_get_drvdata(dev);
+
+	if (hns3_is_phys_func(ae_dev->pdev)) {
+		dev_info(dev, "Begin to resume.\n");
+		if (ae_dev && ae_dev->ops && ae_dev->ops->reset_done)
+			ae_dev->ops->reset_done(ae_dev);
+	}
+
+	return 0;
+}
+
 static pci_ers_result_t hns3_error_detected(struct pci_dev *pdev,
 					    pci_channel_state_t state)
 {
@@ -2423,8 +2449,8 @@ static void hns3_reset_prepare(struct pci_dev *pdev)
 	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
 
 	dev_info(&pdev->dev, "FLR prepare\n");
-	if (ae_dev && ae_dev->ops && ae_dev->ops->flr_prepare)
-		ae_dev->ops->flr_prepare(ae_dev);
+	if (ae_dev && ae_dev->ops && ae_dev->ops->reset_prepare)
+		ae_dev->ops->reset_prepare(ae_dev, HNAE3_FLR_RESET);
 }
 
 static void hns3_reset_done(struct pci_dev *pdev)
@@ -2432,8 +2458,8 @@ static void hns3_reset_done(struct pci_dev *pdev)
 	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
 
 	dev_info(&pdev->dev, "FLR done\n");
-	if (ae_dev && ae_dev->ops && ae_dev->ops->flr_done)
-		ae_dev->ops->flr_done(ae_dev);
+	if (ae_dev && ae_dev->ops && ae_dev->ops->reset_done)
+		ae_dev->ops->reset_done(ae_dev);
 }
 
 static const struct pci_error_handlers hns3_err_handler = {
@@ -2443,12 +2469,15 @@ static const struct pci_error_handlers hns3_err_handler = {
 	.reset_done	= hns3_reset_done,
 };
 
+static SIMPLE_DEV_PM_OPS(hns3_pm_ops, hns3_suspend, hns3_resume);
+
 static struct pci_driver hns3_driver = {
 	.name     = hns3_driver_name,
 	.id_table = hns3_pci_tbl,
 	.probe    = hns3_probe,
 	.remove   = hns3_remove,
 	.shutdown = hns3_shutdown,
+	.driver.pm  = &hns3_pm_ops,
 	.sriov_configure = hns3_pci_sriov_configure,
 	.err_handler    = &hns3_err_handler,
 };

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

@@ -11058,10 +11058,11 @@ static void hclge_state_uninit(struct hclge_dev *hdev)
 		cancel_delayed_work_sync(&hdev->service_task);
 }
 
-static void hclge_flr_prepare(struct hnae3_ae_dev *ae_dev)
+static void hclge_reset_prepare_general(struct hnae3_ae_dev *ae_dev,
+					enum hnae3_reset_type rst_type)
 {
-#define HCLGE_FLR_RETRY_WAIT_MS	500
-#define HCLGE_FLR_RETRY_CNT	5
+#define HCLGE_RESET_RETRY_WAIT_MS	500
+#define HCLGE_RESET_RETRY_CNT	5
 
 	struct hclge_dev *hdev = ae_dev->priv;
 	int retry_cnt = 0;
@@ -11070,30 +11071,34 @@ static void hclge_flr_prepare(struct hnae3_ae_dev *ae_dev)
 retry:
 	down(&hdev->reset_sem);
 	set_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
-	hdev->reset_type = HNAE3_FLR_RESET;
+	hdev->reset_type = rst_type;
 	ret = hclge_reset_prepare(hdev);
 	if (ret || hdev->reset_pending) {
-		dev_err(&hdev->pdev->dev, "fail to prepare FLR, ret=%d\n",
+		dev_err(&hdev->pdev->dev, "fail to prepare to reset, ret=%d\n",
 			ret);
 		if (hdev->reset_pending ||
-		    retry_cnt++ < HCLGE_FLR_RETRY_CNT) {
+		    retry_cnt++ < HCLGE_RESET_RETRY_CNT) {
 			dev_err(&hdev->pdev->dev,
 				"reset_pending:0x%lx, retry_cnt:%d\n",
 				hdev->reset_pending, retry_cnt);
 			clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
 			up(&hdev->reset_sem);
-			msleep(HCLGE_FLR_RETRY_WAIT_MS);
+			msleep(HCLGE_RESET_RETRY_WAIT_MS);
 			goto retry;
 		}
 	}
 
-	/* disable misc vector before FLR done */
+	/* disable misc vector before reset done */
 	hclge_enable_vector(&hdev->misc_vector, false);
 	set_bit(HCLGE_STATE_CMD_DISABLE, &hdev->state);
+
+	if (hdev->reset_type == HNAE3_FLR_RESET)
 		hdev->rst_stats.flr_rst_cnt++;
+	else if (hdev->reset_type == HNAE3_FUNC_RESET)
+		hdev->rst_stats.pf_rst_cnt++;
 }
 
-static void hclge_flr_done(struct hnae3_ae_dev *ae_dev)
+static void hclge_reset_done(struct hnae3_ae_dev *ae_dev)
 {
 	struct hclge_dev *hdev = ae_dev->priv;
 	int ret;
@@ -12466,8 +12471,8 @@ static int hclge_get_module_eeprom(struct hnae3_handle *handle, u32 offset,
 static const struct hnae3_ae_ops hclge_ops = {
 	.init_ae_dev = hclge_init_ae_dev,
 	.uninit_ae_dev = hclge_uninit_ae_dev,
-	.flr_prepare = hclge_flr_prepare,
-	.flr_done = hclge_flr_done,
+	.reset_prepare = hclge_reset_prepare_general,
+	.reset_done = hclge_reset_done,
 	.init_client_instance = hclge_init_client_instance,
 	.uninit_client_instance = hclge_uninit_client_instance,
 	.map_ring_to_vector = hclge_map_ring_to_vector,

drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c

@@ -2114,10 +2114,11 @@ static void hclgevf_enable_vector(struct hclgevf_misc_vector *vector, bool en)
 	writel(en ? 1 : 0, vector->addr);
 }
 
-static void hclgevf_flr_prepare(struct hnae3_ae_dev *ae_dev)
+static void hclgevf_reset_prepare_general(struct hnae3_ae_dev *ae_dev,
+					  enum hnae3_reset_type rst_type)
 {
-#define HCLGEVF_FLR_RETRY_WAIT_MS	500
-#define HCLGEVF_FLR_RETRY_CNT		5
+#define HCLGEVF_RESET_RETRY_WAIT_MS	500
+#define HCLGEVF_RESET_RETRY_CNT		5
 
 	struct hclgevf_dev *hdev = ae_dev->priv;
 	int retry_cnt = 0;
@@ -2126,29 +2127,31 @@ static void hclgevf_flr_prepare(struct hnae3_ae_dev *ae_dev)
 retry:
 	down(&hdev->reset_sem);
 	set_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
-	hdev->reset_type = HNAE3_FLR_RESET;
+	hdev->reset_type = rst_type;
 	ret = hclgevf_reset_prepare(hdev);
 	if (ret) {
-		dev_err(&hdev->pdev->dev, "fail to prepare FLR, ret=%d\n",
+		dev_err(&hdev->pdev->dev, "fail to prepare to reset, ret=%d\n",
 			ret);
 		if (hdev->reset_pending ||
-		    retry_cnt++ < HCLGEVF_FLR_RETRY_CNT) {
+		    retry_cnt++ < HCLGEVF_RESET_RETRY_CNT) {
 			dev_err(&hdev->pdev->dev,
 				"reset_pending:0x%lx, retry_cnt:%d\n",
 				hdev->reset_pending, retry_cnt);
 			clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
 			up(&hdev->reset_sem);
-			msleep(HCLGEVF_FLR_RETRY_WAIT_MS);
+			msleep(HCLGEVF_RESET_RETRY_WAIT_MS);
 			goto retry;
 		}
 	}
 
-	/* disable misc vector before FLR done */
+	/* disable misc vector before reset done */
 	hclgevf_enable_vector(&hdev->misc_vector, false);
+
+	if (hdev->reset_type == HNAE3_FLR_RESET)
 		hdev->rst_stats.flr_rst_cnt++;
 }
 
-static void hclgevf_flr_done(struct hnae3_ae_dev *ae_dev)
+static void hclgevf_reset_done(struct hnae3_ae_dev *ae_dev)
 {
 	struct hclgevf_dev *hdev = ae_dev->priv;
 	int ret;
@@ -3748,8 +3751,8 @@ void hclgevf_update_port_base_vlan_info(struct hclgevf_dev *hdev, u16 state,
 static const struct hnae3_ae_ops hclgevf_ops = {
 	.init_ae_dev = hclgevf_init_ae_dev,
 	.uninit_ae_dev = hclgevf_uninit_ae_dev,
-	.flr_prepare = hclgevf_flr_prepare,
-	.flr_done = hclgevf_flr_done,
+	.reset_prepare = hclgevf_reset_prepare_general,
+	.reset_done = hclgevf_reset_done,
 	.init_client_instance = hclgevf_init_client_instance,
 	.uninit_client_instance = hclgevf_uninit_client_instance,
 	.start = hclgevf_ae_start,