From: Shreyansh Jain <shreyansh.jain@nxp.com>
To: <david.marchand@6wind.com>
Cc: <dev@dpdk.org>, <thomas.monjalon@6wind.com>,
Shreyansh Jain <shreyansh.jain@nxp.com>
Subject: [dpdk-dev] [PATCH v6 4/8] eal/bus: support for scanning of bus
Date: Mon, 16 Jan 2017 21:08:23 +0530 [thread overview]
Message-ID: <1484581107-2025-5-git-send-email-shreyansh.jain@nxp.com> (raw)
In-Reply-To: <1484581107-2025-1-git-send-email-shreyansh.jain@nxp.com>
Scan for bus discovers the devices available on the bus and adds them
to a bus specific device list. Each bus mandatorily implements this
method.
Test cases for Bus are also updated by this patch.
Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>
---
app/test/test_bus.c | 175 ++++++++++++++++++++++++++++++++
lib/librte_eal/common/eal_common_bus.c | 2 +
lib/librte_eal/common/include/rte_bus.h | 18 ++++
3 files changed, 195 insertions(+)
diff --git a/app/test/test_bus.c b/app/test/test_bus.c
index 9680bac..0b6d011 100644
--- a/app/test/test_bus.c
+++ b/app/test/test_bus.c
@@ -106,10 +106,26 @@ struct dummy_bus_map {
struct rte_bus_list orig_bus_list =
TAILQ_HEAD_INITIALIZER(orig_bus_list);
+/* Forward declarations for callbacks from bus */
+
+/* Bus A
+ * Scan would register devA1 and devA2 to bus
+ */
+static int scan_fn_for_busA(void);
+
+/* Bus B
+ * Scan would register devB1 and devB2 to bus
+ */
+static int scan_fn_for_busB(void);
+
+/* generic implementations wrapped around by above declarations */
+static int generic_scan_fn(struct rte_bus *bus);
+
struct dummy_bus busA = {
.name = "busA_impl", /* busA */
.bus = {
.name = "busA",
+ .scan = scan_fn_for_busA,
},
};
@@ -117,6 +133,7 @@ struct dummy_bus busB = {
.name = "busB_impl", /* busB */
.bus = {
.name = "busB",
+ .scan = scan_fn_for_busB,
},
};
@@ -226,9 +243,81 @@ dump_device_tree(void)
printf("------>8-------\n");
}
+/* @internal
+ * Move over the bus_map and find the entry matching the bus object
+ * passed as argument.
+ * For each device in that bus_map list, register.
+ *
+ * @param bus
+ * bus to scan againt test entry
+ * @return
+ * 0 for successful scan, even if no devices are found
+ * !0 for any error in scanning (like, invalid bus)
+ */
+static int
+generic_scan_fn(struct rte_bus *bus)
+{
+ int i = 0;
+ struct dummy_device *ddev = NULL;
+ struct dummy_bus_map *dbmap = NULL;
+ struct dummy_bus *db = NULL;
+
+ if (!bus)
+ return -1;
+
+ /* Extract the device tree node using the bus passed */
+ for (i = 0; bus_map[i].name; i++) {
+ if (!strcmp(bus_map[i].name, bus->name)) {
+ dbmap = &bus_map[i];
+ break;
+ }
+ }
+
+ if (!dbmap)
+ return -1;
+
+ db = dbmap->dbus;
+
+ /* For all the devices in the device tree (bus_map), add device */
+ for (i = 0; dbmap->ddevices[i]; i++) {
+ ddev = dbmap->ddevices[i];
+ TAILQ_INSERT_TAIL(&db->device_list, ddev, next);
+ ddev->dev.bus = bus;
+ }
+
+ return 0;
+}
+
+int
+scan_fn_for_busA(void) {
+ struct dummy_bus_map *dbm;
+
+ dbm = &bus_map[0];
+ while (dbm) {
+ if (strcmp(dbm->name, "busA") == 0)
+ return generic_scan_fn(&dbm->dbus->bus);
+ dbm++;
+ }
+ return 1;
+}
+
+int
+scan_fn_for_busB(void) {
+ struct dummy_bus_map *dbm;
+
+ dbm = &bus_map[0];
+ while (dbm) {
+ if (strcmp(dbm->name, "busB") == 0)
+ return generic_scan_fn(&dbm->dbus->bus);
+ dbm++;
+ }
+ return 1;
+}
+
static int
test_bus_setup(void)
{
+ int i = 0;
struct rte_bus *bus_p = NULL;
/* Preserve the original bus list before executing test */
@@ -238,6 +327,13 @@ test_bus_setup(void)
TAILQ_INSERT_TAIL(&orig_bus_list, bus_p, next);
}
+ /* Initialize the bus lists */
+ for (i = 0; bus_map[i].name; i++) {
+ TAILQ_INIT(&bus_map[i].dbus->device_list);
+ TAILQ_INIT(&bus_map[i].dbus->driver_list);
+ }
+
+ dump_device_tree();
return 0;
}
@@ -336,6 +432,79 @@ test_bus_unregistration(void)
return 0;
}
+static int
+test_device_unregistration_on_bus(void)
+{
+ int i;
+ struct rte_bus *bus = NULL;
+ struct dummy_device *ddev;
+ struct dummy_bus *dbus;
+
+ for (i = 0; bus_map[i].name; i++) {
+ bus = &(bus_map[i].dbus->bus);
+ if (!bus) {
+ printf("Unable to find bus (%s)\n",
+ bus_map[i].name);
+ return -1;
+ }
+
+ dbus = container_of(bus, struct dummy_bus, bus);
+ /* For bus 'bus', unregister all devices */
+ TAILQ_FOREACH(ddev, &dbus->device_list, next) {
+ TAILQ_REMOVE(&dbus->device_list, ddev, next);
+ }
+ }
+
+ for (i = 0; bus_map[i].name; i++) {
+ bus = &(bus_map[i].dbus->bus);
+ dbus = container_of(bus, struct dummy_bus, bus);
+
+ if (!TAILQ_EMPTY(&dbus->device_list)) {
+ printf("Unable to remove all devices on bus (%s)\n",
+ bus->name);
+ return -1;
+ }
+ }
+
+ /* All devices from all buses have been removed */
+ printf("All devices on all buses unregistered.\n");
+ dump_device_tree();
+
+ return 0;
+}
+
+/* @internal
+ * For each bus registered, call the scan function to identify devices
+ * on the bus.
+ *
+ * @param void
+ * @return
+ * 0 for successful scan
+ * !0 for unsuccessful scan
+ *
+ */
+static int
+test_bus_scan(void)
+{
+ int ret;
+ struct rte_bus *bus;
+
+ TAILQ_FOREACH(bus, &rte_bus_list, next) {
+ /* Call the scan function for each bus */
+ ret = bus->scan();
+ if (ret) {
+ printf("Scan of buses failed.\n");
+ return -1;
+ }
+ }
+
+ printf("Scan of all buses completed.\n");
+ dump_device_tree();
+
+ return 0;
+}
+
+
int
test_bus(void)
{
@@ -346,6 +515,12 @@ test_bus(void)
if (test_bus_registration())
return -1;
+ if (test_bus_scan())
+ return -1;
+
+ if (test_device_unregistration_on_bus())
+ return -1;
+
if (test_bus_unregistration())
return -1;
diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c
index c891392..35baff8 100644
--- a/lib/librte_eal/common/eal_common_bus.c
+++ b/lib/librte_eal/common/eal_common_bus.c
@@ -51,6 +51,8 @@ rte_bus_register(struct rte_bus *bus)
{
RTE_VERIFY(bus);
RTE_VERIFY(bus->name && strlen(bus->name));
+ /* A bus should mandatorily have the scan implemented */
+ RTE_VERIFY(bus->scan);
TAILQ_INSERT_TAIL(&rte_bus_list, bus, next);
RTE_LOG(INFO, EAL, "Registered [%s] bus.\n", bus->name);
diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h
index fe0f69d..152451c 100644
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -60,11 +60,29 @@ TAILQ_HEAD(rte_bus_list, rte_bus);
extern struct rte_bus_list rte_bus_list;
/**
+ * Bus specific scan for devices attached on the bus.
+ * For each bus object, the scan would be reponsible for finding devices and
+ * adding them to its private device list.
+ *
+ * A bus should mandatorily implement this method.
+ *
+ * Generic bus object passed only as a helper for implementation to find
+ * their respective registered bus object. Implementations can choose not
+ * to use this variable.
+ *
+ * @return
+ * 0 for successful scan
+ * !0 (<0) for unsuccessful scan with error value
+ */
+typedef int (*rte_bus_scan_t)(void);
+
+/**
* A structure describing a generic bus.
*/
struct rte_bus {
TAILQ_ENTRY(rte_bus) next; /**< Next bus object in linked list */
const char *name; /**< Name of the bus */
+ rte_bus_scan_t scan; /**< Scan for devices attached to bus */
};
/**
--
2.7.4
next prev parent reply other threads:[~2017-01-16 15:35 UTC|newest]
Thread overview: 146+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-16 15:38 [dpdk-dev] [PATCH v6 0/8] Introducing EAL Bus-Device-Driver Model Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 1/8] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 2/8] test: add basic bus infrastructure tests Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 3/8] pci: split match and probe function Shreyansh Jain
2017-01-16 18:24 ` Stephen Hemminger
2017-01-17 10:10 ` Shreyansh Jain
2017-01-16 19:53 ` Ferruh Yigit
2017-01-17 4:54 ` Shreyansh Jain
2017-01-17 9:58 ` Ferruh Yigit
2017-01-17 10:14 ` Shreyansh Jain
2017-01-16 15:38 ` Shreyansh Jain [this message]
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 5/8] eal: introduce bus scan and probe in EAL Shreyansh Jain
2017-01-16 19:58 ` Ferruh Yigit
2017-01-17 5:03 ` Shreyansh Jain
2017-01-17 23:04 ` Thomas Monjalon
2017-01-17 10:13 ` Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 6/8] test: update bus and pci unit test cases Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 7/8] eal: enable PCI bus Shreyansh Jain
2017-01-16 19:58 ` Ferruh Yigit
2017-01-17 5:04 ` Shreyansh Jain
2017-01-17 10:11 ` Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 8/8] eal: enable hotplugging of devices on bus Shreyansh Jain
2017-01-17 7:24 ` Shreyansh Jain
2017-01-16 18:27 ` [dpdk-dev] [PATCH v6 0/8] Introducing EAL Bus-Device-Driver Model Stephen Hemminger
2017-01-17 5:08 ` Shreyansh Jain
2017-01-17 5:09 ` Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 0/9] " Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 1/9] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 2/9] test: add basic bus infrastructure tests Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 3/9] pci: split match and probe function Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 4/9] eal/bus: support for scanning of bus Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 5/9] eal/bus: introduce support for bus probing Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 6/9] eal: integrate bus scan and probe with EAL Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 7/9] test: update bus and pci unit test cases Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 8/9] eal: enable PCI bus Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 9/9] eal: enable hotplugging of devices on bus Shreyansh Jain
2017-01-17 10:47 ` Ferruh Yigit
2017-01-17 11:04 ` Shreyansh Jain
2017-01-17 13:40 ` Shreyansh Jain
2017-01-17 10:50 ` [dpdk-dev] [PATCH v7 0/9] Introducing EAL Bus-Device-Driver Model Ferruh Yigit
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 " Shreyansh Jain
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 1/9] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-17 23:19 ` Thomas Monjalon
2017-01-18 5:12 ` Shreyansh Jain
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 2/9] test: add basic bus infrastructure tests Shreyansh Jain
2017-01-17 23:23 ` Thomas Monjalon
2017-01-18 5:13 ` Shreyansh Jain
2017-01-18 6:56 ` Shreyansh Jain
2017-01-18 7:28 ` Thomas Monjalon
2017-01-18 8:42 ` Shreyansh Jain
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 3/9] pci: split match and probe function Shreyansh Jain
2017-01-17 23:31 ` Thomas Monjalon
2017-01-18 6:17 ` Shreyansh Jain
2017-01-18 7:31 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 4/9] eal/bus: support for scanning of bus Shreyansh Jain
2017-01-17 23:37 ` Thomas Monjalon
2017-01-18 5:15 ` Shreyansh Jain
2017-01-18 7:32 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 5/9] eal/bus: introduce support for bus probing Shreyansh Jain
2017-01-17 23:38 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 6/9] eal: integrate bus scan and probe with EAL Shreyansh Jain
2017-01-17 23:44 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 7/9] test: update bus and pci unit test cases Shreyansh Jain
2017-01-17 23:46 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 8/9] eal: enable PCI bus Shreyansh Jain
2017-01-17 23:57 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 9/9] eal: enable hotplugging of devices on bus Shreyansh Jain
2017-01-17 15:17 ` Ferruh Yigit
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 00/12] Introducing EAL Bus-Device-Driver Model Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 01/12] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-18 10:46 ` Thomas Monjalon
2017-01-18 10:52 ` Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 02/12] test: add basic bus infrastructure tests Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 03/12] pci: split match and probe function Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 04/12] eal: remove loop over drivers in device detach Shreyansh Jain
2017-01-18 10:41 ` Shreyansh Jain
2017-01-18 11:12 ` Thomas Monjalon
2017-01-18 12:15 ` Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 05/12] eal/bus: support for scanning of bus Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 06/12] eal/bus: introduce support for bus probing Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 07/12] eal: integrate bus scan and probe with EAL Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 08/12] eal/pci: add support for PCI bus Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 09/12] test: add test cases for scan and probe on BUS Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 10/12] test: add Bus based scan and probe test cases for PCI Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 11/12] eal: enable PCI bus Shreyansh Jain
2017-01-18 10:38 ` [dpdk-dev] [PATCH v9 12/12] eal: enable hotplugging of devices on bus Shreyansh Jain
2017-01-18 11:10 ` [dpdk-dev] [PATCH v9 00/12] Introducing EAL Bus-Device-Driver Model Thomas Monjalon
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 00/13] " Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 01/13] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 02/13] test: add basic bus infrastructure tests Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 03/13] pci: split match and probe function Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 04/13] eal: remove loop over drivers in device detach Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 05/13] eal/bus: support for scanning of bus Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 06/13] eal/bus: introduce support for bus probing Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 07/13] eal: integrate bus scan and probe with EAL Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 08/13] eal/pci: add support for PCI bus Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 09/13] test: add test cases for scan and probe on BUS Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 10/13] test: add Bus based scan and probe test cases for PCI Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 11/13] eal: enable PCI bus Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 12/13] eal: enable hotplugging of devices on bus Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 13/13] doc: remove deprecation notice for rte_bus Shreyansh Jain
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 00/13] rte_bus + rte_pci_bus Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 01/13] bus: introduce bus abstraction Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 02/13] bus: add scanning Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 03/13] bus: add probing Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 04/13] app/test: check bus registration Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 05/13] app/test: check bus scan Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 06/13] app/test: check bus probe Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 07/13] pci: split match and probe Thomas Monjalon
2017-02-15 10:45 ` Jan Blunck
2017-02-15 11:22 ` Thomas Monjalon
2017-02-15 11:52 ` Shreyansh Jain
2017-02-15 11:30 ` Shreyansh Jain
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 08/13] pci: remove loop over drivers in device detach Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 09/13] pci: add bus driver Thomas Monjalon
2017-02-15 10:42 ` Jan Blunck
2017-02-15 11:20 ` Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 10/13] app/test: add PCI " Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 11/13] pci: use bus driver for scan/probe Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 12/13] pci: use bus driver for attach/detach Thomas Monjalon
2017-02-15 11:08 ` Jan Blunck
2017-02-15 11:26 ` Thomas Monjalon
2017-02-15 11:39 ` Jan Blunck
2017-02-15 14:04 ` [dpdk-dev] [RFC] eal: use busname and devargs to attach devices Jan Blunck
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 13/13] doc: remove deprecation notice for rte_bus Thomas Monjalon
2017-01-19 17:40 ` Mcnamara, John
2017-01-19 4:50 ` [dpdk-dev] [PATCH v11 00/13] rte_bus + rte_pci_bus Thomas Monjalon
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 0/5] rte_bus_pci Gaetan Rivet
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 1/5] pci: split match and probe Gaetan Rivet
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 2/5] pci: remove loop over drivers in device detach Gaetan Rivet
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 3/5] pci: add bus driver Gaetan Rivet
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 4/5] pci: use bus driver for scan/probe Gaetan Rivet
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 5/5] test: remove pci tests Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 0/7] rte_bus_pci Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 1/7] test: remove pci tests Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 2/7] pci: split match and probe Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 3/7] pci: remove loop over drivers in device detach Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 4/7] pci: add bus driver Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 5/7] pci: use bus driver for scan/probe Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 6/7] pci: use bus driver for attach/detach Gaetan Rivet
2017-04-14 8:43 ` Thomas Monjalon
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 7/7] doc: remove deprecation notice for rte_bus Gaetan Rivet
2017-04-11 11:32 ` Shreyansh Jain
2017-04-11 11:54 ` Gaëtan Rivet
2017-04-12 16:09 ` [dpdk-dev] [PATCH v13 0/7] rte_bus_pci Stephen Hemminger
2017-04-14 12:16 ` Thomas Monjalon
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