1 files changed, 42 insertions, 240 deletions

diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index d9777b662eba..7afa0c8a6b64 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -57,6 +57,7 @@ int hns_get_gid_index(struct hns_roce_dev *hr_dev, u8 port, int gid_index)
 {
 	return gid_index * hr_dev->caps.num_ports + port;
 }
+EXPORT_SYMBOL_GPL(hns_get_gid_index);
 
 static void hns_roce_set_mac(struct hns_roce_dev *hr_dev, u8 port, u8 *addr)
 {
@@ -174,8 +175,9 @@ static int hns_roce_setup_mtu_mac(struct hns_roce_dev *hr_dev)
 	u8 i;
 
 	for (i = 0; i < hr_dev->caps.num_ports; i++) {
-		hr_dev->hw->set_mtu(hr_dev, hr_dev->iboe.phy_port[i],
-				    hr_dev->caps.max_mtu);
+		if (hr_dev->hw->set_mtu)
+			hr_dev->hw->set_mtu(hr_dev, hr_dev->iboe.phy_port[i],
+					    hr_dev->caps.max_mtu);
 		hns_roce_set_mac(hr_dev, i, hr_dev->iboe.netdevs[i]->dev_addr);
 	}
 
@@ -531,169 +533,6 @@ error_failed_setup_mtu_mac:
 	return ret;
 }
 
-static const struct of_device_id hns_roce_of_match[] = {
-	{ .compatible = "hisilicon,hns-roce-v1", .data = &hns_roce_hw_v1, },
-	{},
-};
-MODULE_DEVICE_TABLE(of, hns_roce_of_match);
-
-static const struct acpi_device_id hns_roce_acpi_match[] = {
-	{ "HISI00D1", (kernel_ulong_t)&hns_roce_hw_v1 },
-	{},
-};
-MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match);
-
-static int hns_roce_node_match(struct device *dev, void *fwnode)
-{
-	return dev->fwnode == fwnode;
-}
-
-static struct
-platform_device *hns_roce_find_pdev(struct fwnode_handle *fwnode)
-{
-	struct device *dev;
-
-	/* get the 'device'corresponding to matching 'fwnode' */
-	dev = bus_find_device(&platform_bus_type, NULL,
-			      fwnode, hns_roce_node_match);
-	/* get the platform device */
-	return dev ? to_platform_device(dev) : NULL;
-}
-
-static int hns_roce_get_cfg(struct hns_roce_dev *hr_dev)
-{
-	int i;
-	int ret;
-	u8 phy_port;
-	int port_cnt = 0;
-	struct device *dev = &hr_dev->pdev->dev;
-	struct device_node *net_node;
-	struct net_device *netdev = NULL;
-	struct platform_device *pdev = NULL;
-	struct resource *res;
-
-	/* check if we are compatible with the underlying SoC */
-	if (dev_of_node(dev)) {
-		const struct of_device_id *of_id;
-
-		of_id = of_match_node(hns_roce_of_match, dev->of_node);
-		if (!of_id) {
-			dev_err(dev, "device is not compatible!\n");
-			return -ENXIO;
-		}
-		hr_dev->hw = (struct hns_roce_hw *)of_id->data;
-		if (!hr_dev->hw) {
-			dev_err(dev, "couldn't get H/W specific DT data!\n");
-			return -ENXIO;
-		}
-	} else if (is_acpi_device_node(dev->fwnode)) {
-		const struct acpi_device_id *acpi_id;
-
-		acpi_id = acpi_match_device(hns_roce_acpi_match, dev);
-		if (!acpi_id) {
-			dev_err(dev, "device is not compatible!\n");
-			return -ENXIO;
-		}
-		hr_dev->hw = (struct hns_roce_hw *) acpi_id->driver_data;
-		if (!hr_dev->hw) {
-			dev_err(dev, "couldn't get H/W specific ACPI data!\n");
-			return -ENXIO;
-		}
-	} else {
-		dev_err(dev, "can't read compatibility data from DT or ACPI\n");
-		return -ENXIO;
-	}
-
-	/* get the mapped register base address */
-	res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev, "memory resource not found!\n");
-		return -EINVAL;
-	}
-	hr_dev->reg_base = devm_ioremap_resource(dev, res);
-	if (IS_ERR(hr_dev->reg_base))
-		return PTR_ERR(hr_dev->reg_base);
-
-	/* read the node_guid of IB device from the DT or ACPI */
-	ret = device_property_read_u8_array(dev, "node-guid",
-					    (u8 *)&hr_dev->ib_dev.node_guid,
-					    GUID_LEN);
-	if (ret) {
-		dev_err(dev, "couldn't get node_guid from DT or ACPI!\n");
-		return ret;
-	}
-
-	/* get the RoCE associated ethernet ports or netdevices */
-	for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) {
-		if (dev_of_node(dev)) {
-			net_node = of_parse_phandle(dev->of_node, "eth-handle",
-						    i);
-			if (!net_node)
-				continue;
-			pdev = of_find_device_by_node(net_node);
-		} else if (is_acpi_device_node(dev->fwnode)) {
-			struct acpi_reference_args args;
-			struct fwnode_handle *fwnode;
-
-			ret = acpi_node_get_property_reference(dev->fwnode,
-							       "eth-handle",
-							       i, &args);
-			if (ret)
-				continue;
-			fwnode = acpi_fwnode_handle(args.adev);
-			pdev = hns_roce_find_pdev(fwnode);
-		} else {
-			dev_err(dev, "cannot read data from DT or ACPI\n");
-			return -ENXIO;
-		}
-
-		if (pdev) {
-			netdev = platform_get_drvdata(pdev);
-			phy_port = (u8)i;
-			if (netdev) {
-				hr_dev->iboe.netdevs[port_cnt] = netdev;
-				hr_dev->iboe.phy_port[port_cnt] = phy_port;
-			} else {
-				dev_err(dev, "no netdev found with pdev %s\n",
-					pdev->name);
-				return -ENODEV;
-			}
-			port_cnt++;
-		}
-	}
-
-	if (port_cnt == 0) {
-		dev_err(dev, "unable to get eth-handle for available ports!\n");
-		return -EINVAL;
-	}
-
-	hr_dev->caps.num_ports = port_cnt;
-
-	/* cmd issue mode: 0 is poll, 1 is event */
-	hr_dev->cmd_mod = 1;
-	hr_dev->loop_idc = 0;
-
-	/* read the interrupt names from the DT or ACPI */
-	ret = device_property_read_string_array(dev, "interrupt-names",
-						hr_dev->irq_names,
-						HNS_ROCE_MAX_IRQ_NUM);
-	if (ret < 0) {
-		dev_err(dev, "couldn't get interrupt names from DT or ACPI!\n");
-		return ret;
-	}
-
-	/* fetch the interrupt numbers */
-	for (i = 0; i < HNS_ROCE_MAX_IRQ_NUM; i++) {
-		hr_dev->irq[i] = platform_get_irq(hr_dev->pdev, i);
-		if (hr_dev->irq[i] <= 0) {
-			dev_err(dev, "platform get of irq[=%d] failed!\n", i);
-			return -EINVAL;
-		}
-	}
-
-	return 0;
-}
-
 static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 {
 	int ret;
@@ -826,42 +665,17 @@ err_uar_table_free:
 	return ret;
 }
 
-/**
- * hns_roce_probe - RoCE driver entrance
- * @pdev: pointer to platform device
- * Return : int
- *
- */
-static int hns_roce_probe(struct platform_device *pdev)
+int hns_roce_init(struct hns_roce_dev *hr_dev)
 {
 	int ret;
-	struct hns_roce_dev *hr_dev;
-	struct device *dev = &pdev->dev;
-
-	hr_dev = (struct hns_roce_dev *)ib_alloc_device(sizeof(*hr_dev));
-	if (!hr_dev)
-		return -ENOMEM;
-
-	hr_dev->pdev = pdev;
-	platform_set_drvdata(pdev, hr_dev);
-
-	if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64ULL)) &&
-	    dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32ULL))) {
-		dev_err(dev, "Not usable DMA addressing mode\n");
-		ret = -EIO;
-		goto error_failed_get_cfg;
-	}
-
-	ret = hns_roce_get_cfg(hr_dev);
-	if (ret) {
-		dev_err(dev, "Get Configuration failed!\n");
-		goto error_failed_get_cfg;
-	}
+	struct device *dev = &hr_dev->pdev->dev;
 
-	ret = hr_dev->hw->reset(hr_dev, true);
-	if (ret) {
-		dev_err(dev, "Reset RoCE engine failed!\n");
-		goto error_failed_get_cfg;
+	if (hr_dev->hw->reset) {
+		ret = hr_dev->hw->reset(hr_dev, true);
+		if (ret) {
+			dev_err(dev, "Reset RoCE engine failed!\n");
+			return ret;
+		}
 	}
 
 	hr_dev->hw->hw_profile(hr_dev);
@@ -872,10 +686,12 @@ static int hns_roce_probe(struct platform_device *pdev)
 		goto error_failed_cmd_init;
 	}
 
-	ret = hns_roce_init_eq_table(hr_dev);
-	if (ret) {
-		dev_err(dev, "eq init failed!\n");
-		goto error_failed_eq_table;
+	if (hr_dev->cmd_mod) {
+		ret = hns_roce_init_eq_table(hr_dev);
+		if (ret) {
+			dev_err(dev, "eq init failed!\n");
+			goto error_failed_eq_table;
+		}
 	}
 
 	if (hr_dev->cmd_mod) {
@@ -898,10 +714,12 @@ static int hns_roce_probe(struct platform_device *pdev)
 		goto error_failed_setup_hca;
 	}
 
-	ret = hr_dev->hw->hw_init(hr_dev);
-	if (ret) {
-		dev_err(dev, "hw_init failed!\n");
-		goto error_failed_engine_init;
+	if (hr_dev->hw->hw_init) {
+		ret = hr_dev->hw->hw_init(hr_dev);
+		if (ret) {
+			dev_err(dev, "hw_init failed!\n");
+			goto error_failed_engine_init;
+		}
 	}
 
 	ret = hns_roce_register_device(hr_dev);
@@ -911,7 +729,8 @@ static int hns_roce_probe(struct platform_device *pdev)
 	return 0;
 
 error_failed_register_device:
-	hr_dev->hw->hw_exit(hr_dev);
+	if (hr_dev->hw->hw_exit)
+		hr_dev->hw->hw_exit(hr_dev);
 
 error_failed_engine_init:
 	hns_roce_cleanup_bitmap(hr_dev);
@@ -924,58 +743,41 @@ error_failed_init_hem:
 		hns_roce_cmd_use_polling(hr_dev);
 
 error_failed_use_event:
-	hns_roce_cleanup_eq_table(hr_dev);
+	if (hr_dev->cmd_mod)
+		hns_roce_cleanup_eq_table(hr_dev);
 
 error_failed_eq_table:
 	hns_roce_cmd_cleanup(hr_dev);
 
 error_failed_cmd_init:
-	ret = hr_dev->hw->reset(hr_dev, false);
-	if (ret)
-		dev_err(&hr_dev->pdev->dev, "roce_engine reset fail\n");
-
-error_failed_get_cfg:
-	ib_dealloc_device(&hr_dev->ib_dev);
+	if (hr_dev->hw->reset) {
+		ret = hr_dev->hw->reset(hr_dev, false);
+		if (ret)
+			dev_err(dev, "Dereset RoCE engine failed!\n");
+	}
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(hns_roce_init);
 
-/**
- * hns_roce_remove - remove RoCE device
- * @pdev: pointer to platform device
- */
-static int hns_roce_remove(struct platform_device *pdev)
+void hns_roce_exit(struct hns_roce_dev *hr_dev)
 {
-	struct hns_roce_dev *hr_dev = platform_get_drvdata(pdev);
-
 	hns_roce_unregister_device(hr_dev);
-	hr_dev->hw->hw_exit(hr_dev);
+	if (hr_dev->hw->hw_exit)
+		hr_dev->hw->hw_exit(hr_dev);
 	hns_roce_cleanup_bitmap(hr_dev);
 	hns_roce_cleanup_hem(hr_dev);
 
 	if (hr_dev->cmd_mod)
 		hns_roce_cmd_use_polling(hr_dev);
 
-	hns_roce_cleanup_eq_table(hr_dev);
+	if (hr_dev->cmd_mod)
+		hns_roce_cleanup_eq_table(hr_dev);
 	hns_roce_cmd_cleanup(hr_dev);
-	hr_dev->hw->reset(hr_dev, false);
-
-	ib_dealloc_device(&hr_dev->ib_dev);
-
-	return 0;
+	if (hr_dev->hw->reset)
+		hr_dev->hw->reset(hr_dev, false);
 }
-
-static struct platform_driver hns_roce_driver = {
-	.probe = hns_roce_probe,
-	.remove = hns_roce_remove,
-	.driver = {
-		.name = DRV_NAME,
-		.of_match_table = hns_roce_of_match,
-		.acpi_match_table = ACPI_PTR(hns_roce_acpi_match),
-	},
-};
-
-module_platform_driver(hns_roce_driver);
+EXPORT_SYMBOL_GPL(hns_roce_exit);
 
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>");