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Cc: Shreyansh Jain <shreyansh.jain@nxp.com>, thomas.monjalon@6wind.com,
viktorin@rehivetech.com
Subject: [dpdk-dev] [PATCH v7 07/21] eal/soc: add SoC PMD
register/unregister logic
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From: Jan Viktorin <viktorin@rehivetech.com>
Registeration of a SoC driver through a helper RTE_PMD_REGISTER_SOC
(on the lines of RTE_PMD_REGISTER_PCI). soc_driver_list stores all the
registered drivers.
Test case has been introduced to verify the registration and
deregistration.
Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>
[Shreyansh: update PMD registration method]
Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>
Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
app/test/test_soc.c | 111 ++++++++++++++++++++++++
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 3 +
lib/librte_eal/common/eal_common_soc.c | 56 ++++++++++++
lib/librte_eal/common/include/rte_soc.h | 26 ++++++
lib/librte_eal/linuxapp/eal/Makefile | 1 +
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 3 +
6 files changed, 200 insertions(+)
create mode 100644 lib/librte_eal/common/eal_common_soc.c
diff --git a/app/test/test_soc.c b/app/test/test_soc.c
index 916a863..ac03e64 100644
--- a/app/test/test_soc.c
+++ b/app/test/test_soc.c
@@ -75,6 +75,108 @@ static int test_compare_addr(void)
free(a2.name);
free(a1.name);
free(a0.name);
+
+ return 0;
+}
+
+/**
+ * Empty PMD driver based on the SoC infra.
+ *
+ * The rte_soc_device is usually wrapped in some higher-level struct
+ * (eth_driver). We simulate such a wrapper with an anonymous struct here.
+ */
+struct test_wrapper {
+ struct rte_soc_driver soc_drv;
+};
+
+struct test_wrapper empty_pmd0 = {
+ .soc_drv = {
+ .driver = {
+ .name = "empty_pmd0"
+ },
+ },
+};
+
+struct test_wrapper empty_pmd1 = {
+ .soc_drv = {
+ .driver = {
+ .name = "empty_pmd1"
+ },
+ },
+};
+
+static int
+count_registered_socdrvs(void)
+{
+ int i;
+ struct rte_soc_driver *drv;
+
+ i = 0;
+ TAILQ_FOREACH(drv, &soc_driver_list, next)
+ i += 1;
+
+ return i;
+}
+
+static int
+test_register_unregister(void)
+{
+ struct rte_soc_driver *drv;
+ int count;
+
+ rte_eal_soc_register(&empty_pmd0.soc_drv);
+
+ TEST_ASSERT(!TAILQ_EMPTY(&soc_driver_list),
+ "No PMD is present but the empty_pmd0 should be there");
+ drv = TAILQ_FIRST(&soc_driver_list);
+ TEST_ASSERT(!strcmp(drv->driver.name, "empty_pmd0"),
+ "The registered PMD is not empty_pmd0 but '%s'",
+ drv->driver.name);
+
+ rte_eal_soc_register(&empty_pmd1.soc_drv);
+
+ count = count_registered_socdrvs();
+ TEST_ASSERT_EQUAL(count, 2, "Expected 2 PMDs but detected %d", count);
+
+ rte_eal_soc_unregister(&empty_pmd0.soc_drv);
+ count = count_registered_socdrvs();
+ TEST_ASSERT_EQUAL(count, 1, "Expected 1 PMDs but detected %d", count);
+
+ rte_eal_soc_unregister(&empty_pmd1.soc_drv);
+
+ printf("%s has been successful\n", __func__);
+ return 0;
+}
+
+/* save real devices and drivers until the tests finishes */
+struct soc_driver_list real_soc_driver_list =
+ TAILQ_HEAD_INITIALIZER(real_soc_driver_list);
+
+static int test_soc_setup(void)
+{
+ struct rte_soc_driver *drv;
+
+ /* no real drivers for the test */
+ while (!TAILQ_EMPTY(&soc_driver_list)) {
+ drv = TAILQ_FIRST(&soc_driver_list);
+ rte_eal_soc_unregister(drv);
+ TAILQ_INSERT_TAIL(&real_soc_driver_list, drv, next);
+ }
+
+ return 0;
+}
+
+static int test_soc_cleanup(void)
+{
+ struct rte_soc_driver *drv;
+
+ /* bring back real drivers after the test */
+ while (!TAILQ_EMPTY(&real_soc_driver_list)) {
+ drv = TAILQ_FIRST(&real_soc_driver_list);
+ TAILQ_REMOVE(&real_soc_driver_list, drv, next);
+ rte_eal_soc_register(drv);
+ }
+
return 0;
}
@@ -84,6 +186,15 @@ test_soc(void)
if (test_compare_addr())
return -1;
+ if (test_soc_setup())
+ return -1;
+
+ if (test_register_unregister())
+ return -1;
+
+ if (test_soc_cleanup())
+ return -1;
+
return 0;
}
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index 11d9f59..cf6fb8e 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -171,8 +171,11 @@ DPDK_16.11 {
rte_eal_dev_attach;
rte_eal_dev_detach;
rte_eal_map_resource;
+ rte_eal_soc_register;
+ rte_eal_soc_unregister;
rte_eal_unmap_resource;
rte_eal_vdrv_register;
rte_eal_vdrv_unregister;
+ soc_driver_list;
} DPDK_16.07;
diff --git a/lib/librte_eal/common/eal_common_soc.c b/lib/librte_eal/common/eal_common_soc.c
new file mode 100644
index 0000000..56135ed
--- /dev/null
+++ b/lib/librte_eal/common/eal_common_soc.c
@@ -0,0 +1,56 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016 RehiveTech. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of RehiveTech nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/queue.h>
+
+#include <rte_log.h>
+
+#include "eal_private.h"
+
+/* Global SoC driver list */
+struct soc_driver_list soc_driver_list =
+ TAILQ_HEAD_INITIALIZER(soc_driver_list);
+
+/* register a driver */
+void
+rte_eal_soc_register(struct rte_soc_driver *driver)
+{
+ TAILQ_INSERT_TAIL(&soc_driver_list, driver, next);
+}
+
+/* unregister a driver */
+void
+rte_eal_soc_unregister(struct rte_soc_driver *driver)
+{
+ TAILQ_REMOVE(&soc_driver_list, driver, next);
+}
diff --git a/lib/librte_eal/common/include/rte_soc.h b/lib/librte_eal/common/include/rte_soc.h
index 5c32737..23b06a9 100644
--- a/lib/librte_eal/common/include/rte_soc.h
+++ b/lib/librte_eal/common/include/rte_soc.h
@@ -51,8 +51,14 @@ extern "C" {
#include <string.h>
#include <rte_dev.h>
+#include <rte_eal.h>
#include <rte_debug.h>
+extern struct soc_driver_list soc_driver_list;
+/**< Global list of SoC Drivers */
+
+TAILQ_HEAD(soc_driver_list, rte_soc_driver); /**< SoC drivers in D-linked Q. */
+
struct rte_soc_id {
const char *compatible; /**< OF compatible specification */
uint64_t priv_data; /**< SoC Driver specific data */
@@ -135,4 +141,24 @@ rte_eal_compare_soc_addr(const struct rte_soc_addr *a0,
return strcmp(a0->name, a1->name);
}
+/**
+ * Register a SoC driver.
+ */
+void rte_eal_soc_register(struct rte_soc_driver *driver);
+
+/** Helper for SoC device registeration from PMD Drivers */
+#define RTE_PMD_REGISTER_SOC(nm, soc_drv) \
+RTE_INIT(socinitfn_ ##name); \
+static void socinitfn_ ##name(void) \
+{\
+ (soc_drv).driver.name = RTE_STR(nm);\
+ rte_eal_soc_register(&soc_drv); \
+} \
+RTE_PMD_EXPORT_NAME(nm, __COUNTER__)
+
+/**
+ * Unregister a SoC driver.
+ */
+void rte_eal_soc_unregister(struct rte_soc_driver *driver);
+
#endif
diff --git a/lib/librte_eal/linuxapp/eal/Makefile b/lib/librte_eal/linuxapp/eal/Makefile
index 4e206f0..a520477 100644
--- a/lib/librte_eal/linuxapp/eal/Makefile
+++ b/lib/librte_eal/linuxapp/eal/Makefile
@@ -77,6 +77,7 @@ SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_timer.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_memzone.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_log.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_launch.c
+SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_soc.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_vdev.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_pci.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_pci_uio.c
diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
index 22b5b59..ab6b985 100644
--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
@@ -175,8 +175,11 @@ DPDK_16.11 {
rte_eal_dev_attach;
rte_eal_dev_detach;
rte_eal_map_resource;
+ rte_eal_soc_register;
+ rte_eal_soc_unregister;
rte_eal_unmap_resource;
rte_eal_vdrv_register;
rte_eal_vdrv_unregister;
+ soc_driver_list;
} DPDK_16.07;
--
2.7.4