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From: Shreyansh Jain <shreyansh.jain@nxp.com>
To: <dev@dpdk.org>, <david.marchand@6wind.com>
Cc: <thomas.monjalon@6wind.com>, <ferruh.yigit@intel.com>,
	<jianbo.liu@linaro.org>, Shreyansh Jain <shreyansh.jain@nxp.com>
Subject: [PATCH v2 08/12] pci: split match and probe function
Date: Tue, 13 Dec 2016 19:07:08 +0530	[thread overview]
Message-ID: <1481636232-2300-9-git-send-email-shreyansh.jain@nxp.com> (raw)
In-Reply-To: <1481636232-2300-1-git-send-email-shreyansh.jain@nxp.com>

Matching of PCI device address and driver ID table is being done at two
discreet locations duplicating the code. (rte_eal_pci_probe_one_driver
and rte_eal_pci_detach_dev).

Splitting the matching function into rte_eal_pci_match.

Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>

--
v2:
 - Change default return in match function
---
 lib/librte_eal/common/eal_common_pci.c  | 198 ++++++++++++++++++--------------
 lib/librte_eal/common/include/rte_pci.h |  15 +++
 2 files changed, 125 insertions(+), 88 deletions(-)

diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c
index 6bff675..706f91c 100644
--- a/lib/librte_eal/common/eal_common_pci.c
+++ b/lib/librte_eal/common/eal_common_pci.c
@@ -152,131 +152,153 @@ pci_unmap_resource(void *requested_addr, size_t size)
 				requested_addr);
 }
 
-/*
- * If vendor/device ID match, call the probe() function of the
- * driver.
- */
-static int
-rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr, struct rte_pci_device *dev)
+int
+rte_eal_pci_match(struct rte_pci_driver *pci_drv,
+		  struct rte_pci_device *pci_dev)
 {
-	int ret;
+	int match = 1;
 	const struct rte_pci_id *id_table;
 
-	for (id_table = dr->id_table; id_table->vendor_id != 0; id_table++) {
+	if (!pci_drv || !pci_dev || !pci_drv->id_table) {
+		RTE_LOG(DEBUG, EAL, "Invalid PCI Driver object\n");
+		return -1;
+	}
 
+	for (id_table = pci_drv->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 &&
+		if (id_table->vendor_id != pci_dev->id.vendor_id &&
 				id_table->vendor_id != PCI_ANY_ID)
 			continue;
-		if (id_table->device_id != dev->id.device_id &&
+		if (id_table->device_id != pci_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)
+		if (id_table->subsystem_vendor_id !=
+		    pci_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)
+		if (id_table->subsystem_device_id !=
+		    pci_dev->id.subsystem_device_id &&
+		    id_table->subsystem_device_id != PCI_ANY_ID)
 			continue;
-		if (id_table->class_id != dev->id.class_id &&
+		if (id_table->class_id != pci_dev->id.class_id &&
 				id_table->class_id != RTE_CLASS_ANY_ID)
 			continue;
 
-		struct rte_pci_addr *loc = &dev->addr;
-
-		RTE_LOG(INFO, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
-				loc->domain, loc->bus, loc->devid, loc->function,
-				dev->device.numa_node);
-
-		/* no initialization when blacklisted, return without error */
-		if (dev->device.devargs != NULL &&
-			dev->device.devargs->type ==
-				RTE_DEVTYPE_BLACKLISTED_PCI) {
-			RTE_LOG(INFO, EAL, "  Device is blacklisted, not initializing\n");
-			return 1;
-		}
-
-		RTE_LOG(INFO, EAL, "  probe driver: %x:%x %s\n", dev->id.vendor_id,
-				dev->id.device_id, dr->driver.name);
-
-		if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING) {
-			/* map resources for devices that use igb_uio */
-			ret = rte_eal_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 probe() function */
-		ret = dr->probe(dr, dev);
-		if (ret)
-			dev->driver = NULL;
-
-		return ret;
+		match = 0;
+		break;
 	}
-	/* return positive value if driver doesn't support this device */
-	return 1;
+
+	return match;
 }
 
 /*
- * If vendor/device ID match, call the remove() function of the
+ * If vendor/device ID match, call the probe() function of the
  * driver.
  */
 static int
-rte_eal_pci_detach_dev(struct rte_pci_driver *dr,
-		struct rte_pci_device *dev)
+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;
+	struct rte_pci_addr *loc;
 
 	if ((dr == NULL) || (dev == NULL))
 		return -EINVAL;
 
-	for (id_table = dr->id_table; id_table->vendor_id != 0; id_table++) {
+	loc = &dev->addr;
 
-		/* 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;
+	RTE_LOG(INFO, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
+			loc->domain, loc->bus, loc->devid, loc->function,
+			dev->device.numa_node);
 
-		struct rte_pci_addr *loc = &dev->addr;
+	/* no initialization when blacklisted, return without error */
+	if (dev->device.devargs != NULL &&
+		dev->device.devargs->type ==
+			RTE_DEVTYPE_BLACKLISTED_PCI) {
+		RTE_LOG(INFO, EAL, "  Device is blacklisted, not"
+			" initializing\n");
+		return 1;
+	}
 
-		RTE_LOG(DEBUG, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
-				loc->domain, loc->bus, loc->devid,
-				loc->function, dev->device.numa_node);
+	/* The device is not blacklisted; Check if driver supports it */
+	ret = rte_eal_pci_match(dr, dev);
+	if (ret) {
+		/* Match of device and driver failed */
+		RTE_LOG(DEBUG, EAL, "Driver (%s) doesn't match the device\n",
+			dr->driver.name);
+		return 1;
+	}
 
-		RTE_LOG(DEBUG, EAL, "  remove driver: %x:%x %s\n", dev->id.vendor_id,
-				dev->id.device_id, dr->driver.name);
+	RTE_LOG(INFO, EAL, "  probe driver: %x:%x %s\n", dev->id.vendor_id,
+			dev->id.device_id, dr->driver.name);
+
+	if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING) {
+		/* map resources for devices that use igb_uio */
+		ret = rte_eal_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;
+	}
 
-		if (dr->remove && (dr->remove(dev) < 0))
-			return -1;	/* negative value is an error */
+	/* reference driver structure */
+	dev->driver = dr;
 
-		/* clear driver structure */
+	/* call the driver probe() function */
+	ret = dr->probe(dr, dev);
+	if (ret) {
+		RTE_LOG(DEBUG, EAL, "Driver (%s) probe failed.\n",
+			dr->driver.name);
 		dev->driver = NULL;
+	}
 
-		if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING)
-			/* unmap resources for devices that use igb_uio */
-			rte_eal_pci_unmap_device(dev);
+	return ret;
+}
 
-		return 0;
+/*
+ * If vendor/device ID match, call the remove() function of the
+ * driver.
+ */
+static int
+rte_eal_pci_detach_dev(struct rte_pci_driver *dr,
+		struct rte_pci_device *dev)
+{
+	int ret;
+	struct rte_pci_addr *loc;
+
+	if ((dr == NULL) || (dev == NULL))
+		return -EINVAL;
+
+	ret = rte_eal_pci_match(dr, dev);
+	if (ret) {
+		/* Device and driver don't match */
+		return 1;
 	}
 
-	/* return positive value if driver doesn't support this device */
-	return 1;
+	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->device.numa_node);
+
+	RTE_LOG(DEBUG, EAL, "  remove driver: %x:%x %s\n", dev->id.vendor_id,
+			dev->id.device_id, dr->driver.name);
+
+	if (dr->remove && (dr->remove(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 */
+		rte_eal_pci_unmap_device(dev);
+
+	return 0;
 }
 
 /*
diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index 9ce8847..c9b113d 100644
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -369,6 +369,21 @@ rte_eal_compare_pci_addr(const struct rte_pci_addr *addr,
 int rte_eal_pci_scan(void);
 
 /**
+ * Match the PCI Driver and Device using the ID Table
+ *
+ * @param pci_drv
+ *	PCI driver from which ID table would be extracted
+ * @param pci_dev
+ *	PCI device to match against the driver
+ * @return
+ *	0 for successful match
+ *	!0 for unsuccessful match
+ */
+int
+rte_eal_pci_match(struct rte_pci_driver *pci_drv,
+		  struct rte_pci_device *pci_dev);
+
+/**
  * Probe the PCI bus for registered drivers.
  *
  * Scan the content of the PCI bus, and call the probe() function for
-- 
2.7.4

  parent reply	other threads:[~2016-12-13 13:35 UTC|newest]

Thread overview: 132+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-04 10:11 [PATCH 00/13] Introducing EAL Bus-Device-Driver Model Shreyansh Jain
2016-12-04 10:11 ` [PATCH 01/13] eal: define container_of macro Shreyansh Jain
2016-12-04 10:11 ` [PATCH 02/13] eal/bus: introduce bus abstraction Shreyansh Jain
2016-12-04 10:11 ` [PATCH 03/13] test: add basic bus infrastructure tests Shreyansh Jain
2016-12-04 10:11 ` [PATCH 04/13] eal/bus: add scan and match support Shreyansh Jain
2016-12-04 10:11 ` [PATCH 05/13] eal/bus: add support for inserting a device on a bus Shreyansh Jain
2016-12-04 10:11 ` [PATCH 06/13] eal: integrate bus scan and probe with EAL Shreyansh Jain
2016-12-04 10:11 ` [PATCH 07/13] pci: replace probe and remove handlers with rte_driver Shreyansh Jain
2016-12-08 17:50   ` Ferruh Yigit
2016-12-09  4:59     ` Shreyansh Jain
2016-12-04 10:11 ` [PATCH 08/13] eal: enable probe and remove from bus infrastructure Shreyansh Jain
2016-12-06 10:45   ` Shreyansh Jain
2016-12-04 10:11 ` [PATCH 09/13] pci: split match and probe function Shreyansh Jain
2016-12-04 10:11 ` [PATCH 10/13] eal/pci: generalize args of PCI scan/match towards RTE device/driver Shreyansh Jain
2016-12-04 10:11 ` [PATCH 11/13] pci: Pass rte_pci_addr to functions instead of separate args Shreyansh Jain
2016-12-04 10:11 ` [PATCH 12/13] eal: enable PCI bus Shreyansh Jain
2016-12-04 10:11 ` [PATCH 13/13] eal/pci: remove PCI probe and init calls Shreyansh Jain
2016-12-06 20:52 ` [PATCH 00/13] Introducing EAL Bus-Device-Driver Model David Marchand
2016-12-07  9:55   ` Shreyansh Jain
2016-12-07 12:17     ` David Marchand
2016-12-07 13:10       ` Shreyansh Jain
2016-12-07 13:24         ` Thomas Monjalon
2016-12-08  5:04           ` Shreyansh Jain
2016-12-08  7:21             ` Thomas Monjalon
2016-12-08  7:53               ` Shreyansh Jain
2016-12-12 14:35         ` Jianbo Liu
2016-12-13  6:56           ` Shreyansh Jain
2016-12-13 13:37 ` [PATCH v2 00/12] " Shreyansh Jain
2016-12-13 13:37   ` [PATCH v2 01/12] eal: define container_of macro Shreyansh Jain
2016-12-13 22:24     ` Jan Blunck
2016-12-14  5:12       ` Shreyansh Jain
2016-12-16  8:14         ` Jan Blunck
2016-12-16  9:23           ` Adrien Mazarguil
2016-12-16 10:47             ` Jan Blunck
2016-12-16 11:21               ` Adrien Mazarguil
2016-12-16 11:54                 ` Shreyansh Jain
2016-12-13 13:37   ` [PATCH v2 02/12] eal/bus: introduce bus abstraction Shreyansh Jain
2016-12-13 13:37   ` [PATCH v2 03/12] test: add basic bus infrastructure tests Shreyansh Jain
2016-12-13 13:37   ` [PATCH v2 04/12] eal/bus: add scan, match and insert support Shreyansh Jain
2016-12-13 13:37   ` [PATCH v2 05/12] eal: integrate bus scan and probe with EAL Shreyansh Jain
2016-12-13 13:37   ` [PATCH v2 06/12] eal: add probe and remove support for rte_driver Shreyansh Jain
2016-12-13 13:37   ` [PATCH v2 07/12] eal: enable probe from bus infrastructure Shreyansh Jain
2016-12-13 13:37   ` Shreyansh Jain [this message]
2016-12-13 13:37   ` [PATCH v2 09/12] eal/pci: generalize args of PCI scan/match towards RTE device/driver Shreyansh Jain
2016-12-13 13:37   ` [PATCH v2 10/12] pci: Pass rte_pci_addr to functions instead of separate args Shreyansh Jain
2016-12-13 13:37   ` [PATCH v2 11/12] eal: enable PCI bus Shreyansh Jain
2016-12-13 13:37   ` [PATCH v2 12/12] drivers: update PMDs to use rte_driver probe and remove Shreyansh Jain
2016-12-13 13:52     ` Andrew Rybchenko
2016-12-13 15:07       ` Ferruh Yigit
2016-12-14  5:14         ` Shreyansh Jain
2016-12-14  5:11       ` Shreyansh Jain
2016-12-14  9:49     ` Shreyansh Jain
2016-12-15 21:36       ` Jan Blunck
2016-12-26  9:14         ` Shreyansh Jain
2016-12-16 13:10   ` [PATCH v3 00/12] Introducing EAL Bus-Device-Driver Model Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 01/12] eal: define container_of macro Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 02/12] eal/bus: introduce bus abstraction Shreyansh Jain
2016-12-20 12:37       ` Hemant Agrawal
2016-12-20 13:17       ` Jan Blunck
2016-12-20 13:51         ` Shreyansh Jain
2016-12-20 17:11         ` Stephen Hemminger
2016-12-21  7:11           ` Shreyansh Jain
2016-12-21 15:38           ` Jan Blunck
2016-12-21 23:33             ` Stephen Hemminger
2016-12-22  5:12               ` Shreyansh Jain
2016-12-22  5:52                 ` Shreyansh Jain
2016-12-25 17:39         ` Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 03/12] test: add basic bus infrastructure tests Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 04/12] eal/bus: add scan, match and insert support Shreyansh Jain
2016-12-16 13:25       ` Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 05/12] eal: integrate bus scan and probe with EAL Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 06/12] eal: add probe and remove support for rte_driver Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 07/12] eal: enable probe from bus infrastructure Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 08/12] pci: split match and probe function Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 09/12] eal/pci: generalize args of PCI scan/match towards RTE device/driver Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 10/12] pci: Pass rte_pci_addr to functions instead of separate args Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 11/12] eal: enable PCI bus and PCI test framework Shreyansh Jain
2016-12-16 13:20       ` Shreyansh Jain
2016-12-16 13:10     ` [PATCH v3 12/12] drivers: update PMDs to use rte_driver probe and remove Shreyansh Jain
2016-12-26 12:50     ` [PATCH v4 00/12] Introducing EAL Bus-Device-Driver Model Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 01/12] eal/bus: introduce bus abstraction Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 02/12] test: add basic bus infrastructure tests Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 03/12] eal/bus: add scan, match and insert support Shreyansh Jain
2016-12-26 13:27         ` Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 04/12] eal: integrate bus scan and probe with EAL Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 05/12] eal: add probe and remove support for rte_driver Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 06/12] eal: enable probe from bus infrastructure Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 07/12] pci: split match and probe function Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 08/12] eal/pci: generalize args of PCI scan/match towards RTE device/driver Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 09/12] pci: Pass rte_pci_addr to functions instead of separate args Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 10/12] eal: enable PCI bus and PCI test framework Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 11/12] drivers: update PMDs to use rte_driver probe and remove Shreyansh Jain
2016-12-26 12:50       ` [PATCH v4 12/12] eal/bus: add bus iteration macros Shreyansh Jain
2016-12-26 13:23       ` [PATCH v5 00/12] Introducing EAL Bus-Device-Driver Model Shreyansh Jain
2016-12-26 13:23         ` [PATCH v5 01/12] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-03 21:52           ` Thomas Monjalon
2017-01-06 10:31             ` Shreyansh Jain
2017-01-06 14:55               ` Thomas Monjalon
2017-01-09  6:24                 ` Shreyansh Jain
2017-01-09 15:22           ` Ferruh Yigit
2017-01-10  4:07             ` Shreyansh Jain
2016-12-26 13:23         ` [PATCH v5 02/12] test: add basic bus infrastructure tests Shreyansh Jain
2016-12-26 13:23         ` [PATCH v5 03/12] eal/bus: add scan, match and insert support Shreyansh Jain
2016-12-26 13:23         ` [PATCH v5 04/12] eal: integrate bus scan and probe with EAL Shreyansh Jain
2017-01-03 21:46           ` Thomas Monjalon
2017-01-06 10:38             ` Shreyansh Jain
2017-01-06 12:00               ` Shreyansh Jain
2017-01-06 13:46                 ` Thomas Monjalon
2017-01-09  6:35                   ` Shreyansh Jain
2017-01-08 12:21           ` Rosen, Rami
2017-01-09  6:34             ` Shreyansh Jain
2016-12-26 13:23         ` [PATCH v5 05/12] eal: add probe and remove support for rte_driver Shreyansh Jain
2017-01-03 22:05           ` Thomas Monjalon
2017-01-06 11:44             ` Shreyansh Jain
2017-01-06 15:26               ` Thomas Monjalon
2017-01-09  6:28                 ` Shreyansh Jain
2016-12-26 13:23         ` [PATCH v5 06/12] eal: enable probe from bus infrastructure Shreyansh Jain
2016-12-26 13:24         ` [PATCH v5 07/12] pci: split match and probe function Shreyansh Jain
2017-01-03 22:08           ` Thomas Monjalon
2016-12-26 13:24         ` [PATCH v5 08/12] eal/pci: generalize args of PCI scan/match towards RTE device/driver Shreyansh Jain
2017-01-03 22:13           ` Thomas Monjalon
2017-01-06 12:03             ` Shreyansh Jain
2016-12-26 13:24         ` [PATCH v5 09/12] pci: Pass rte_pci_addr to functions instead of separate args Shreyansh Jain
2016-12-26 13:24         ` [PATCH v5 10/12] eal: enable PCI bus and PCI test framework Shreyansh Jain
2016-12-26 13:24         ` [PATCH v5 11/12] drivers: update PMDs to use rte_driver probe and remove Shreyansh Jain
2017-01-09 15:19           ` Ferruh Yigit
2017-01-09 16:18             ` Ferruh Yigit
2017-01-10  4:09               ` Shreyansh Jain
2016-12-26 13:24         ` [PATCH v5 12/12] eal/bus: add bus iteration macros Shreyansh Jain
2017-01-03 22:15           ` Thomas Monjalon
2017-01-03 22:22         ` [PATCH v5 00/12] Introducing EAL Bus-Device-Driver Model Thomas Monjalon
2017-01-06  6:27           ` Shreyansh Jain

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