[PATCH v3 4/8] eal: Consolidate rte_eal_pci_probe/close_one_driver() of linuxapp and bsdapp

[Tetsuya Mukawa <mukawa@igel.co.jp>]

From: "Tetsuya.Mukawa" <mukawa@igel.co.jp>

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

Because pci_map_device() is only implemented in linuxapp, the patch
implements it in bsdapp too. This implemented function will be merged to
linuxapp one with later patch.

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
---
 lib/librte_eal/bsdapp/eal/eal_pci.c    |  74 ++---------------
 lib/librte_eal/common/eal_common_pci.c | 129 ++++++++++++++++++++++++++++
 lib/librte_eal/common/eal_private.h    |  21 ++---
 lib/librte_eal/linuxapp/eal/eal_pci.c  | 148 ++-------------------------------
 4 files changed, 153 insertions(+), 219 deletions(-)

diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c
index c7017eb..2a623e3 100644
--- a/lib/librte_eal/bsdapp/eal/eal_pci.c
+++ b/lib/librte_eal/bsdapp/eal/eal_pci.c
@@ -88,7 +88,7 @@ static struct rte_tailq_elem rte_uio_tailq = {
 EAL_REGISTER_TAILQ(rte_uio_tailq)
 
 /* 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 "
@@ -430,6 +430,13 @@ skipdev:
 	return 0;
 }
 
+/* Map pci device */
+int
+pci_map_device(struct rte_pci_device *dev)
+{
+	return pci_uio_map_resource(dev);
+}
+
 /*
  * Scan the content of the PCI bus, and add the devices in the devices
  * list. Call pci_scan_one() for each pci entry found.
@@ -480,71 +487,6 @@ error:
 	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)
diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c
index 4229aaf..6eb6257 100644
--- a/lib/librte_eal/common/eal_common_pci.c
+++ b/lib/librte_eal/common/eal_common_pci.c
@@ -99,6 +99,135 @@ static struct rte_devargs *pci_devargs_lookup(struct rte_pci_device *dev)
 }
 
 /*
+ * 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
  * failed, return 1 if no driver is found for this device.
diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h
index 4acf5a0..fe2c596 100644
--- a/lib/librte_eal/common/eal_private.h
+++ b/lib/librte_eal/common/eal_private.h
@@ -154,30 +154,31 @@ struct rte_pci_driver;
 struct rte_pci_device;
 
 /**
- * Mmap memory for single PCI device
+ * Unbind kernel driver for this 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);
+int pci_unbind_kernel_driver(struct rte_pci_device *dev);
 
 /**
- * Munmap memory for single PCI device
+ * Map this 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);
+int pci_map_device(struct rte_pci_device *dev);
+
+/**
+ * Unmap this device
+ *
+ * This function is private to EAL.
+ */
+void pci_unmap_device(struct rte_pci_device *dev);
 
 /**
  * Init tail queues for non-EAL library structures. This is to allow
diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
index d2adc66..91e958e 100644
--- a/lib/librte_eal/linuxapp/eal/eal_pci.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
@@ -57,7 +57,7 @@
  */
 
 /* unbind kernel driver for this device */
-static int
+int
 pci_unbind_kernel_driver(struct rte_pci_device *dev)
 {
 	int n;
@@ -563,7 +563,8 @@ pci_config_space_set(struct rte_pci_device *dev)
 }
 #endif
 
-static int
+/* Map pci device */
+int
 pci_map_device(struct rte_pci_device *dev)
 {
 	int ret = -1;
@@ -592,7 +593,8 @@ pci_map_device(struct rte_pci_device *dev)
 }
 
 #ifdef RTE_LIBRTE_EAL_HOTPLUG
-static void
+/* Unmap pci device */
+void
 pci_unmap_device(struct rte_pci_device *dev)
 {
 	if (dev == NULL)
@@ -616,146 +618,6 @@ 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.
- */
-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)
-- 
2.1.4