Merge branch 'hns-roce' into k.o/for-4.9

drivers/infiniband/hw/hns/hns_roce_device.h

@@ -531,7 +531,7 @@ struct hns_roce_dev {
 	struct ib_device	ib_dev;
 	struct platform_device  *pdev;
 	struct hns_roce_uar     priv_uar;
-	const char		*irq_names;
+	const char		*irq_names[HNS_ROCE_MAX_IRQ_NUM];
 	spinlock_t		sm_lock;
 	spinlock_t		cq_db_lock;
 	spinlock_t		bt_cmd_lock;

drivers/infiniband/hw/hns/hns_roce_eq.c

@@ -713,7 +713,7 @@ int hns_roce_init_eq_table(struct hns_roce_dev *hr_dev)
 
 	for (j = 0; j < eq_num; j++) {
 		ret = request_irq(eq_table->eq[j].irq, hns_roce_msi_x_interrupt,
-				  0, hr_dev->irq_names, eq_table->eq + j);
+				  0, hr_dev->irq_names[j], eq_table->eq + j);
 		if (ret) {
 			dev_err(dev, "request irq error!\n");
 			goto err_request_irq_fail;

drivers/infiniband/hw/hns/hns_roce_hw_v1.c

@@ -31,6 +31,7 @@
  */
 
 #include <linux/platform_device.h>
+#include <linux/acpi.h>
 #include <rdma/ib_umem.h>
 #include "hns_roce_common.h"
 #include "hns_roce_device.h"
@@ -794,29 +795,47 @@ static void hns_roce_port_enable(struct hns_roce_dev *hr_dev, int enable_flag)
  * @enable: true -- drop reset, false -- reset
  * return 0 - success , negative --fail
  */
-int hns_roce_v1_reset(struct hns_roce_dev *hr_dev, bool enable)
+int hns_roce_v1_reset(struct hns_roce_dev *hr_dev, bool dereset)
 {
 	struct device_node *dsaf_node;
 	struct device *dev = &hr_dev->pdev->dev;
 	struct device_node *np = dev->of_node;
+	struct fwnode_handle *fwnode;
 	int ret;
 
-	dsaf_node = of_parse_phandle(np, "dsaf-handle", 0);
-	if (!dsaf_node) {
-		dev_err(dev, "Unable to get dsaf node by dsaf-handle!\n");
-		return -EINVAL;
+	/* check if this is DT/ACPI case */
+	if (dev_of_node(dev)) {
+		dsaf_node = of_parse_phandle(np, "dsaf-handle", 0);
+		if (!dsaf_node) {
+			dev_err(dev, "could not find dsaf-handle\n");
+			return -EINVAL;
+		}
+		fwnode = &dsaf_node->fwnode;
+	} else if (is_acpi_device_node(dev->fwnode)) {
+		struct acpi_reference_args args;
+
+		ret = acpi_node_get_property_reference(dev->fwnode,
+						       "dsaf-handle", 0, &args);
+		if (ret) {
+			dev_err(dev, "could not find dsaf-handle\n");
+			return ret;
+		}
+		fwnode = acpi_fwnode_handle(args.adev);
+	} else {
+		dev_err(dev, "cannot read data from DT or ACPI\n");
+		return -ENXIO;
 	}
 
-	ret = hns_dsaf_roce_reset(&dsaf_node->fwnode, false);
+	ret = hns_dsaf_roce_reset(fwnode, false);
 	if (ret)
 		return ret;
 
-	if (enable) {
+	if (dereset) {
 		msleep(SLEEP_TIME_INTERVAL);
-		return hns_dsaf_roce_reset(&dsaf_node->fwnode, true);
+		ret = hns_dsaf_roce_reset(fwnode, true);
 	}
 
-	return 0;
+	return ret;
 }
 
 void hns_roce_v1_profile(struct hns_roce_dev *hr_dev)

drivers/infiniband/hw/hns/hns_roce_hw_v1.h

@@ -976,6 +976,6 @@ struct hns_roce_v1_priv {
 	struct hns_roce_raq_table raq_table;
 };
 
-int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool enable);
+int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool dereset);
 
 #endif

drivers/infiniband/hw/hns/hns_roce_main.c

@@ -30,7 +30,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-
+#include <linux/acpi.h>
 #include <linux/of_platform.h>
 #include <rdma/ib_addr.h>
 #include <rdma/ib_smi.h>
@@ -694,67 +694,155 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
 	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 *np = dev->of_node;
 	struct device_node *net_node;
 	struct net_device *netdev = NULL;
 	struct platform_device *pdev = NULL;
 	struct resource *res;
 
-	if (of_device_is_compatible(np, "hisilicon,hns-roce-v1")) {
-		hr_dev->hw = &hns_roce_hw_v1;
+	/* 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, "device no compatible!\n");
-		return -EINVAL;
+		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);
 
+	/* get the RoCE associated ethernet ports or netdevices */
 	for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) {
-		net_node = of_parse_phandle(np, "eth-handle", i);
-		if (net_node) {
+		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 available port by eth-handle!\n");
+		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 */
+	/* 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, "Get No.%d irq resource failed!\n", i);
+			dev_err(dev, "platform get of irq[=%d] failed!\n", i);
 			return -EINVAL;
 		}
-
-		if (of_property_read_string_index(np, "interrupt-names", i,
-						  &hr_dev->irq_names))
-			return -EINVAL;
 	}
 
 	return 0;
@@ -917,7 +1005,7 @@ static int hns_roce_probe(struct platform_device *pdev)
 
 	if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64ULL)) &&
 	    dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32ULL))) {
-		dev_err(dev, "No usable DMA addressing mode\n");
+		dev_err(dev, "Not usable DMA addressing mode\n");
 		ret = -EIO;
 		goto error_failed_get_cfg;
 	}
@@ -1035,18 +1123,13 @@ static int hns_roce_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct of_device_id hns_roce_of_match[] = {
-	{ .compatible = "hisilicon,hns-roce-v1",},
-	{},
-};
-MODULE_DEVICE_TABLE(of, hns_roce_of_match);
-
 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),
 	},
 };
 

drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c

@@ -644,21 +644,6 @@ hns_mac_phy_parse_addr(struct device *dev, struct fwnode_handle *fwnode)
 	return addr;
 }
 
-static int hns_mac_phydev_match(struct device *dev, void *fwnode)
-{
-	return dev->fwnode == fwnode;
-}
-
-static struct
-platform_device *hns_mac_find_platform_device(struct fwnode_handle *fwnode)
-{
-	struct device *dev;
-
-	dev = bus_find_device(&platform_bus_type, NULL,
-			      fwnode, hns_mac_phydev_match);
-	return dev ? to_platform_device(dev) : NULL;
-}
-
 static int
 hns_mac_register_phydev(struct mii_bus *mdio, struct hns_mac_cb *mac_cb,
 			u32 addr)
@@ -724,7 +709,7 @@ static void hns_mac_register_phy(struct hns_mac_cb *mac_cb)
 		return;
 
 	/* dev address in adev */
-	pdev = hns_mac_find_platform_device(acpi_fwnode_handle(args.adev));
+	pdev = hns_dsaf_find_platform_device(acpi_fwnode_handle(args.adev));
 	mii_bus = platform_get_drvdata(pdev);
 	rc = hns_mac_register_phydev(mii_bus, mac_cb, addr);
 	if (!rc)