pci: merge probing and closing functions for linux and bsd

This patch consolidates below functions, and implements these in common
eal code.
 - rte_eal_pci_probe_one_driver()
 - rte_eal_pci_close_one_driver()

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: David Marchand <david.marchand@6wind.com>

lib/librte_eal/bsdapp/eal/eal_pci.c

@@ -84,7 +84,7 @@
  */
 
 /* unbind kernel driver for this device */
-static int
+int
 pci_unbind_kernel_driver(struct rte_pci_device *dev __rte_unused)
 {
 	RTE_LOG(ERR, EAL, "RTE_PCI_DRV_FORCE_UNBIND flag is not implemented "
@@ -358,71 +358,6 @@ pci_scan(void)
 	return -1;
 }
 
-/*
- * If vendor/device ID match, call the devinit() function of the
- * driver.
- */
-int
-rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr, struct rte_pci_device *dev)
-{
-	const struct rte_pci_id *id_table;
-	int ret;
-
-	for (id_table = dr->id_table ; id_table->vendor_id != 0; id_table++) {
-
-		/* check if device's identifiers match the driver's ones */
-		if (id_table->vendor_id != dev->id.vendor_id &&
-				id_table->vendor_id != PCI_ANY_ID)
-			continue;
-		if (id_table->device_id != dev->id.device_id &&
-				id_table->device_id != PCI_ANY_ID)
-			continue;
-		if (id_table->subsystem_vendor_id != dev->id.subsystem_vendor_id &&
-				id_table->subsystem_vendor_id != PCI_ANY_ID)
-			continue;
-		if (id_table->subsystem_device_id != dev->id.subsystem_device_id &&
-				id_table->subsystem_device_id != PCI_ANY_ID)
-			continue;
-
-		struct rte_pci_addr *loc = &dev->addr;
-
-		RTE_LOG(DEBUG, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
-				loc->domain, loc->bus, loc->devid, loc->function,
-				dev->numa_node);
-
-		RTE_LOG(DEBUG, EAL, "  probe driver: %x:%x %s\n", dev->id.vendor_id,
-				dev->id.device_id, dr->name);
-
-		/* no initialization when blacklisted, return without error */
-		if (dev->devargs != NULL &&
-			dev->devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI) {
-
-			RTE_LOG(DEBUG, EAL, "  Device is blacklisted, not initializing\n");
-			return 0;
-		}
-
-		if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING) {
-			/* map resources for devices that use igb_uio */
-			ret = pci_uio_map_resource(dev);
-			if (ret != 0)
-				return ret;
-		} else if (dr->drv_flags & RTE_PCI_DRV_FORCE_UNBIND &&
-		           rte_eal_process_type() == RTE_PROC_PRIMARY) {
-			/* unbind current driver */
-			if (pci_unbind_kernel_driver(dev) < 0)
-				return -1;
-		}
-
-		/* reference driver structure */
-		dev->driver = dr;
-
-		/* call the driver devinit() function */
-		return dr->devinit(dr, dev);
-	}
-	/* return positive value if driver is not found */
-	return 1;
-}
-
 /* Init the PCI EAL subsystem */
 int
 rte_eal_pci_init(void)

lib/librte_eal/common/eal_common_pci.c

@@ -138,7 +138,7 @@ pci_unmap_resource(void *requested_addr, size_t size)
 }
 
 /* Map pci device */
-int
+static int
 pci_map_device(struct rte_pci_device *dev)
 {
 	int ret = -1;
@@ -169,7 +169,7 @@ pci_map_device(struct rte_pci_device *dev)
 
 #ifdef RTE_LIBRTE_EAL_HOTPLUG
 /* Unmap pci device */
-void
+static void
 pci_unmap_device(struct rte_pci_device *dev)
 {
 	if (dev == NULL)
@@ -194,6 +194,135 @@ pci_unmap_device(struct rte_pci_device *dev)
 }
 #endif /* RTE_LIBRTE_EAL_HOTPLUG */
 
+/*
+ * If vendor/device ID match, call the devinit() function of the
+ * driver.
+ */
+static int
+rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr, struct rte_pci_device *dev)
+{
+	int ret;
+	const struct rte_pci_id *id_table;
+
+	for (id_table = dr->id_table; id_table->vendor_id != 0; id_table++) {
+
+		/* check if device's identifiers match the driver's ones */
+		if (id_table->vendor_id != dev->id.vendor_id &&
+				id_table->vendor_id != PCI_ANY_ID)
+			continue;
+		if (id_table->device_id != dev->id.device_id &&
+				id_table->device_id != PCI_ANY_ID)
+			continue;
+		if (id_table->subsystem_vendor_id != dev->id.subsystem_vendor_id &&
+				id_table->subsystem_vendor_id != PCI_ANY_ID)
+			continue;
+		if (id_table->subsystem_device_id != dev->id.subsystem_device_id &&
+				id_table->subsystem_device_id != PCI_ANY_ID)
+			continue;
+
+		struct rte_pci_addr *loc = &dev->addr;
+
+		RTE_LOG(DEBUG, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
+				loc->domain, loc->bus, loc->devid, loc->function,
+				dev->numa_node);
+
+		RTE_LOG(DEBUG, EAL, "  probe driver: %x:%x %s\n", dev->id.vendor_id,
+				dev->id.device_id, dr->name);
+
+		/* no initialization when blacklisted, return without error */
+		if (dev->devargs != NULL &&
+			dev->devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI) {
+			RTE_LOG(DEBUG, EAL, "  Device is blacklisted, not initializing\n");
+			return 1;
+		}
+
+		if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING) {
+#ifdef RTE_PCI_CONFIG
+			/*
+			 * Set PCIe config space for high performance.
+			 * Return value can be ignored.
+			 */
+			pci_config_space_set(dev);
+#endif
+			/* map resources for devices that use igb_uio */
+			ret = pci_map_device(dev);
+			if (ret != 0)
+				return ret;
+		} else if (dr->drv_flags & RTE_PCI_DRV_FORCE_UNBIND &&
+				rte_eal_process_type() == RTE_PROC_PRIMARY) {
+			/* unbind current driver */
+			if (pci_unbind_kernel_driver(dev) < 0)
+				return -1;
+		}
+
+		/* reference driver structure */
+		dev->driver = dr;
+
+		/* call the driver devinit() function */
+		return dr->devinit(dr, dev);
+	}
+	/* return positive value if driver is not found */
+	return 1;
+}
+
+#ifdef RTE_LIBRTE_EAL_HOTPLUG
+/*
+ * If vendor/device ID match, call the devuninit() function of the
+ * driver.
+ */
+static int
+rte_eal_pci_close_one_driver(struct rte_pci_driver *dr,
+		struct rte_pci_device *dev)
+{
+	const struct rte_pci_id *id_table;
+
+	if ((dr == NULL) || (dev == NULL))
+		return -EINVAL;
+
+	for (id_table = dr->id_table; id_table->vendor_id != 0; id_table++) {
+
+		/* check if device's identifiers match the driver's ones */
+		if (id_table->vendor_id != dev->id.vendor_id &&
+				id_table->vendor_id != PCI_ANY_ID)
+			continue;
+		if (id_table->device_id != dev->id.device_id &&
+				id_table->device_id != PCI_ANY_ID)
+			continue;
+		if (id_table->subsystem_vendor_id != dev->id.subsystem_vendor_id &&
+				id_table->subsystem_vendor_id != PCI_ANY_ID)
+			continue;
+		if (id_table->subsystem_device_id != dev->id.subsystem_device_id &&
+				id_table->subsystem_device_id != PCI_ANY_ID)
+			continue;
+
+		struct rte_pci_addr *loc = &dev->addr;
+
+		RTE_LOG(DEBUG, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
+				loc->domain, loc->bus, loc->devid,
+				loc->function, dev->numa_node);
+
+		RTE_LOG(DEBUG, EAL, "  remove driver: %x:%x %s\n", dev->id.vendor_id,
+				dev->id.device_id, dr->name);
+
+		/* call the driver devuninit() function */
+		if (dr->devuninit && (dr->devuninit(dev) < 0))
+			return -1;	/* negative value is an error */
+
+		/* clear driver structure */
+		dev->driver = NULL;
+
+		if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING)
+			/* unmap resources for devices that use igb_uio */
+			pci_unmap_device(dev);
+
+		return 0;
+	}
+
+	/* return positive value if driver is not found */
+	return 1;
+}
+#endif /* RTE_LIBRTE_EAL_HOTPLUG */
+
 /*
  * If vendor/device ID match, call the devinit() function of all
  * registered driver for the given device. Return -1 if initialization

lib/librte_eal/common/eal_private.h

@@ -155,23 +155,14 @@ struct rte_pci_driver;
 struct rte_pci_device;
 
 /**
- * Map this device
+ * Unbind kernel driver for this device
  *
  * This function is private to EAL.
  *
  * @return
  *   0 on success, negative on error
  */
-int pci_map_device(struct rte_pci_device *dev);
+int pci_unbind_kernel_driver(struct rte_pci_device *dev);
-
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
-/**
- * Unmap this device
- *
- * This function is private to EAL.
- */
-void pci_unmap_device(struct rte_pci_device *dev);
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
 
 /**
  * Map the PCI resource of a PCI device in virtual memory
@@ -192,32 +183,6 @@ int pci_uio_map_resource(struct rte_pci_device *dev);
 void pci_uio_unmap_resource(struct rte_pci_device *dev);
 #endif /* RTE_LIBRTE_EAL_HOTPLUG */
 
-/**
- * Mmap memory for single PCI device
- *
- * This function is private to EAL.
- *
- * @return
- *   0 on success, negative on error
- */
-int rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr,
-		struct rte_pci_device *dev);
-
-/**
- * Munmap memory for single PCI device
- *
- * This function is private to EAL.
- *
- * @param	dr
- *  The pointer to the pci driver structure
- * @param	dev
- *  The pointer to the pci device structure
- * @return
- *   0 on success, negative on error
- */
-int rte_eal_pci_close_one_driver(struct rte_pci_driver *dr,
-		struct rte_pci_device *dev);
-
 /**
  * Allocate uio resource for PCI device
  *

lib/librte_eal/linuxapp/eal/eal_pci.c

@@ -56,7 +56,7 @@
  */
 
 /* unbind kernel driver for this device */
-static int
+int
 pci_unbind_kernel_driver(struct rte_pci_device *dev)
 {
 	int n;
@@ -522,146 +522,6 @@ pci_config_space_set(struct rte_pci_device *dev)
 }
 #endif
 
-/*
- * If vendor/device ID match, call the devinit() function of the
- * driver.
- */
-int
-rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr, struct rte_pci_device *dev)
-{
-	int ret;
-	const struct rte_pci_id *id_table;
-
-	for (id_table = dr->id_table; id_table->vendor_id != 0; id_table++) {
-
-		/* check if device's identifiers match the driver's ones */
-		if (id_table->vendor_id != dev->id.vendor_id &&
-				id_table->vendor_id != PCI_ANY_ID)
-			continue;
-		if (id_table->device_id != dev->id.device_id &&
-				id_table->device_id != PCI_ANY_ID)
-			continue;
-		if (id_table->subsystem_vendor_id != dev->id.subsystem_vendor_id &&
-				id_table->subsystem_vendor_id != PCI_ANY_ID)
-			continue;
-		if (id_table->subsystem_device_id != dev->id.subsystem_device_id &&
-				id_table->subsystem_device_id != PCI_ANY_ID)
-			continue;
-
-		struct rte_pci_addr *loc = &dev->addr;
-
-		RTE_LOG(DEBUG, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
-				loc->domain, loc->bus, loc->devid, loc->function,
-				dev->numa_node);
-
-		RTE_LOG(DEBUG, EAL, "  probe driver: %x:%x %s\n", dev->id.vendor_id,
-				dev->id.device_id, dr->name);
-
-		/* no initialization when blacklisted, return without error */
-		if (dev->devargs != NULL &&
-			dev->devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI) {
-			RTE_LOG(DEBUG, EAL, "  Device is blacklisted, not initializing\n");
-			return 1;
-		}
-
-		if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING) {
-#ifdef RTE_PCI_CONFIG
-			/*
-			 * Set PCIe config space for high performance.
-			 * Return value can be ignored.
-			 */
-			pci_config_space_set(dev);
-#endif
-			/* map resources for devices that use igb_uio */
-			ret = pci_map_device(dev);
-			if (ret != 0)
-				return ret;
-		} else if (dr->drv_flags & RTE_PCI_DRV_FORCE_UNBIND &&
-		           rte_eal_process_type() == RTE_PROC_PRIMARY) {
-			/* unbind current driver */
-			if (pci_unbind_kernel_driver(dev) < 0)
-				return -1;
-		}
-
-		/* reference driver structure */
-		dev->driver = dr;
-
-		/* call the driver devinit() function */
-		return dr->devinit(dr, dev);
-	}
-	/* return positive value if driver is not found */
-	return 1;
-}
-
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
-/*
- * If vendor/device ID match, call the devuninit() function of the
- * driver.
- */
-int
-rte_eal_pci_close_one_driver(struct rte_pci_driver *dr,
-		struct rte_pci_device *dev)
-{
-	const struct rte_pci_id *id_table;
-
-	if ((dr == NULL) || (dev == NULL))
-		return -EINVAL;
-
-	for (id_table = dr->id_table; id_table->vendor_id != 0; id_table++) {
-
-		/* check if device's identifiers match the driver's ones */
-		if (id_table->vendor_id != dev->id.vendor_id &&
-		    id_table->vendor_id != PCI_ANY_ID)
-			continue;
-		if (id_table->device_id != dev->id.device_id &&
-		    id_table->device_id != PCI_ANY_ID)
-			continue;
-		if (id_table->subsystem_vendor_id !=
-		    dev->id.subsystem_vendor_id &&
-		    id_table->subsystem_vendor_id != PCI_ANY_ID)
-			continue;
-		if (id_table->subsystem_device_id !=
-		    dev->id.subsystem_device_id &&
-		    id_table->subsystem_device_id != PCI_ANY_ID)
-			continue;
-
-		struct rte_pci_addr *loc = &dev->addr;
-
-		RTE_LOG(DEBUG, EAL,
-				"PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
-				loc->domain, loc->bus, loc->devid,
-				loc->function, dev->numa_node);
-
-		RTE_LOG(DEBUG, EAL, "  remove driver: %x:%x %s\n",
-				dev->id.vendor_id, dev->id.device_id,
-				dr->name);
-
-		/* call the driver devuninit() function */
-		if (dr->devuninit && (dr->devuninit(dev) < 0))
-			return -1;	/* negative value is an error */
-
-		/* clear driver structure */
-		dev->driver = NULL;
-
-		if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING)
-			/* unmap resources for devices that use igb_uio */
-			pci_unmap_device(dev);
-
-		return 0;
-	}
-	/* return positive value if driver is not found */
-	return 1;
-}
-#else /* RTE_LIBRTE_EAL_HOTPLUG */
-int
-rte_eal_pci_close_one_driver(struct rte_pci_driver *dr __rte_unused,
-		struct rte_pci_device *dev __rte_unused)
-{
-	RTE_LOG(ERR, EAL, "Hotplug support isn't enabled\n");
-	return -1;
-}
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
-
 /* Init the PCI EAL subsystem */
 int
 rte_eal_pci_init(void)