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Cc: Shreyansh Jain <shreyansh.jain@nxp.com>, thomas.monjalon@6wind.com,
viktorin@rehivetech.com
Subject: [dpdk-dev] [PATCH v6 06/21] eal/soc: introduce very essential SoC
infra definitions
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From: Jan Viktorin <viktorin@rehivetech.com>
Define initial structures and functions for the SoC infrastructure.
This patch supports only a very minimal functions for now.
More features will be added in the following commits.
Includes rte_device/rte_driver inheritance of
rte_soc_device/rte_soc_driver.
Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>
Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>
Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
app/test/Makefile | 1 +
app/test/test_soc.c | 90 +++++++++++++++++++++
lib/librte_eal/common/Makefile | 2 +-
lib/librte_eal/common/eal_private.h | 4 +
lib/librte_eal/common/include/rte_soc.h | 138 ++++++++++++++++++++++++++++++++
5 files changed, 234 insertions(+), 1 deletion(-)
create mode 100644 app/test/test_soc.c
create mode 100644 lib/librte_eal/common/include/rte_soc.h
diff --git a/app/test/Makefile b/app/test/Makefile
index 5be023a..30295af 100644
--- a/app/test/Makefile
+++ b/app/test/Makefile
@@ -77,6 +77,7 @@ APP = test
#
SRCS-$(CONFIG_RTE_LIBRTE_CMDLINE) := commands.c
SRCS-y += test.c
+SRCS-y += test_soc.c
SRCS-y += resource.c
SRCS-y += test_resource.c
test_resource.res: test_resource.c
diff --git a/app/test/test_soc.c b/app/test/test_soc.c
new file mode 100644
index 0000000..916a863
--- /dev/null
+++ b/app/test/test_soc.c
@@ -0,0 +1,90 @@
+/*-
+ * 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 <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <sys/queue.h>
+
+#include <rte_soc.h>
+#include <rte_devargs.h>
+#include <rte_debug.h>
+
+#include "test.h"
+
+static char *safe_strdup(const char *s)
+{
+ char *c = strdup(s);
+
+ if (c == NULL)
+ rte_panic("failed to strdup '%s'\n", s);
+
+ return c;
+}
+
+static int test_compare_addr(void)
+{
+ struct rte_soc_addr a0;
+ struct rte_soc_addr a1;
+ struct rte_soc_addr a2;
+
+ a0.name = safe_strdup("ethernet0");
+ a0.fdt_path = NULL;
+
+ a1.name = safe_strdup("ethernet0");
+ a1.fdt_path = NULL;
+
+ a2.name = safe_strdup("ethernet1");
+ a2.fdt_path = NULL;
+
+ TEST_ASSERT(!rte_eal_compare_soc_addr(&a0, &a1),
+ "Failed to compare two soc addresses that equal");
+ TEST_ASSERT(rte_eal_compare_soc_addr(&a0, &a2),
+ "Failed to compare two soc addresses that differs");
+
+ free(a2.name);
+ free(a1.name);
+ free(a0.name);
+ return 0;
+}
+
+static int
+test_soc(void)
+{
+ if (test_compare_addr())
+ return -1;
+
+ return 0;
+}
+
+REGISTER_TEST_COMMAND(soc_autotest, test_soc);
diff --git a/lib/librte_eal/common/Makefile b/lib/librte_eal/common/Makefile
index dfd64aa..b414008 100644
--- a/lib/librte_eal/common/Makefile
+++ b/lib/librte_eal/common/Makefile
@@ -33,7 +33,7 @@ include $(RTE_SDK)/mk/rte.vars.mk
INC := rte_branch_prediction.h rte_common.h
INC += rte_debug.h rte_eal.h rte_errno.h rte_launch.h rte_lcore.h
-INC += rte_log.h rte_memory.h rte_memzone.h rte_pci.h
+INC += rte_log.h rte_memory.h rte_memzone.h rte_soc.h rte_pci.h
INC += rte_per_lcore.h rte_random.h
INC += rte_tailq.h rte_interrupts.h rte_alarm.h
INC += rte_string_fns.h rte_version.h
diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h
index c8c2131..0e8d6f7 100644
--- a/lib/librte_eal/common/eal_private.h
+++ b/lib/librte_eal/common/eal_private.h
@@ -36,6 +36,7 @@
#include <stdio.h>
#include <rte_pci.h>
+#include <rte_soc.h>
/**
* Initialize the memzone subsystem (private to eal).
@@ -118,6 +119,9 @@ int rte_eal_log_init(const char *id, int facility);
*/
int rte_eal_pci_init(void);
+struct rte_soc_driver;
+struct rte_soc_device;
+
struct rte_pci_driver;
struct rte_pci_device;
diff --git a/lib/librte_eal/common/include/rte_soc.h b/lib/librte_eal/common/include/rte_soc.h
new file mode 100644
index 0000000..5c32737
--- /dev/null
+++ b/lib/librte_eal/common/include/rte_soc.h
@@ -0,0 +1,138 @@
+/*-
+ * 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.
+ */
+
+#ifndef _RTE_SOC_H_
+#define _RTE_SOC_H_
+
+/**
+ * @file
+ *
+ * RTE SoC Interface
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <string.h>
+
+#include <rte_dev.h>
+#include <rte_debug.h>
+
+struct rte_soc_id {
+ const char *compatible; /**< OF compatible specification */
+ uint64_t priv_data; /**< SoC Driver specific data */
+};
+
+struct rte_soc_addr {
+ char *name; /**< name used in sysfs */
+ char *fdt_path; /**< path to the associated node in FDT */
+};
+
+/**
+ * A structure describing a SoC device.
+ */
+struct rte_soc_device {
+ TAILQ_ENTRY(rte_soc_device) next; /**< Next probed SoC device */
+ struct rte_device device; /**< Inherit code device */
+ struct rte_soc_addr addr; /**< SoC device Location */
+ struct rte_soc_id *id; /**< SoC device ID list */
+ struct rte_soc_driver *driver; /**< Associated driver */
+};
+
+struct rte_soc_driver;
+
+/**
+ * Probe function for the driver called during SoC probing.
+ */
+typedef int (soc_probe_t)(struct rte_soc_driver *, struct rte_soc_device *);
+
+/**
+ * Remove function for the driver called during hotplugging.
+ */
+typedef int (soc_remove_t)(struct rte_soc_device *);
+
+/**
+ * A structure describing a SoC driver.
+ */
+struct rte_soc_driver {
+ TAILQ_ENTRY(rte_soc_driver) next; /**< Next in list */
+ struct rte_driver driver; /**< Inherit core driver. */
+ soc_probe_t *probe; /**< Device probe */
+ soc_remove_t *remove; /**< Device remove */
+ const struct rte_soc_id *id_table; /**< ID table, NULL terminated */
+};
+
+/**
+ * Utility function to write a SoC device name, this device name can later be
+ * used to retrieve the corresponding rte_soc_addr using above functions.
+ *
+ * @param addr
+ * The SoC address
+ * @param output
+ * The output buffer string
+ * @param size
+ * The output buffer size
+ * @return
+ * 0 on success, negative on error.
+ */
+static inline void
+rte_eal_soc_device_name(const struct rte_soc_addr *addr,
+ char *output, size_t size)
+{
+ int ret;
+
+ RTE_VERIFY(addr != NULL);
+ RTE_VERIFY(size >= strlen(addr->name));
+ ret = snprintf(output, size, "%s", addr->name);
+ RTE_VERIFY(ret >= 0);
+}
+
+static inline int
+rte_eal_compare_soc_addr(const struct rte_soc_addr *a0,
+ const struct rte_soc_addr *a1)
+{
+ if (a0 == NULL || a1 == NULL)
+ return -1;
+
+ RTE_VERIFY(a0->name != NULL);
+ RTE_VERIFY(a1->name != NULL);
+
+ return strcmp(a0->name, a1->name);
+}
+
+#endif
--
2.7.4