[PATCH v2 03/22] bus/fslmc: introducing fsl-mc bus driver

[Hemant Agrawal <hemant.agrawal@nxp.com>]

The fslmc bus driver is a rte_bus driver which scans the fsl-mc bus
for NXP DPAA2 SoCs.

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 MAINTAINERS                                 |   4 +
 config/common_base                          |   5 +
 config/defconfig_arm64-dpaa2-linuxapp-gcc   |   8 +-
 drivers/Makefile                            |   1 +
 drivers/bus/Makefile                        |  36 +++++++
 drivers/bus/fslmc/Makefile                  |  66 +++++++++++++
 drivers/bus/fslmc/fslmc_bus.c               | 125 +++++++++++++++++++++++
 drivers/bus/fslmc/rte_bus_fslmc_version.map |   8 ++
 drivers/bus/fslmc/rte_fslmc.h               | 148 ++++++++++++++++++++++++++++
 9 files changed, 400 insertions(+), 1 deletion(-)
 create mode 100644 drivers/bus/Makefile
 create mode 100644 drivers/bus/fslmc/Makefile
 create mode 100644 drivers/bus/fslmc/fslmc_bus.c
 create mode 100644 drivers/bus/fslmc/rte_bus_fslmc_version.map
 create mode 100644 drivers/bus/fslmc/rte_fslmc.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 6726868..cdc9451 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -348,6 +348,10 @@ M: Alejandro Lucero <alejandro.lucero@netronome.com>
 F: drivers/net/nfp/
 F: doc/guides/nics/nfp.rst
 
+NXP dpaa2
+M: Hemant Agrawal <hemant.agrawal@nxp.com>
+F: drivers/bus/fslmc/
+
 QLogic bnx2x
 M: Harish Patil <harish.patil@cavium.com>
 M: Rasesh Mody <rasesh.mody@cavium.com>
diff --git a/config/common_base b/config/common_base
index c16e560..5a68cde 100644
--- a/config/common_base
+++ b/config/common_base
@@ -292,6 +292,11 @@ CONFIG_RTE_LIBRTE_THUNDERX_NICVF_DEBUG_DRIVER=n
 CONFIG_RTE_LIBRTE_THUNDERX_NICVF_DEBUG_MBOX=n
 
 #
+# Compile NXP DPAA2 FSL-MC Bus
+#
+CONFIG_RTE_LIBRTE_FSLMC_BUS=n
+
+#
 # Compile burst-oriented VIRTIO PMD driver
 #
 CONFIG_RTE_LIBRTE_VIRTIO_PMD=y
diff --git a/config/defconfig_arm64-dpaa2-linuxapp-gcc b/config/defconfig_arm64-dpaa2-linuxapp-gcc
index 66df54c..365ae5a 100644
--- a/config/defconfig_arm64-dpaa2-linuxapp-gcc
+++ b/config/defconfig_arm64-dpaa2-linuxapp-gcc
@@ -1,6 +1,7 @@
 #   BSD LICENSE
 #
-#   Copyright(c) 2016 Freescale Semiconductor, Inc. All rights reserved.
+#   Copyright (c) 2016 Freescale Semiconductor, Inc. All rights reserved.
+#   Copyright (c) 2016 NXP. All rights reserved.
 #
 #   Redistribution and use in source and binary forms, with or without
 #   modification, are permitted provided that the following conditions
@@ -40,3 +41,8 @@ CONFIG_RTE_ARCH_ARM_TUNE="cortex-a57+fp+simd"
 #
 CONFIG_RTE_MAX_LCORE=8
 CONFIG_RTE_MAX_NUMA_NODES=1
+
+#
+# Compile NXP DPAA2 FSL-MC Bus
+#
+CONFIG_RTE_LIBRTE_FSLMC_BUS=y
diff --git a/drivers/Makefile b/drivers/Makefile
index 81c03a8..e937449 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -31,6 +31,7 @@
 
 include $(RTE_SDK)/mk/rte.vars.mk
 
+DIRS-y += bus
 DIRS-y += net
 DIRS-$(CONFIG_RTE_LIBRTE_CRYPTODEV) += crypto
 
diff --git a/drivers/bus/Makefile b/drivers/bus/Makefile
new file mode 100644
index 0000000..60e9764
--- /dev/null
+++ b/drivers/bus/Makefile
@@ -0,0 +1,36 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2016 NXP. 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 NXP 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 $(RTE_SDK)/mk/rte.vars.mk
+
+DIRS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += fslmc
+
+include $(RTE_SDK)/mk/rte.subdir.mk
diff --git a/drivers/bus/fslmc/Makefile b/drivers/bus/fslmc/Makefile
new file mode 100644
index 0000000..ad28d8a
--- /dev/null
+++ b/drivers/bus/fslmc/Makefile
@@ -0,0 +1,66 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2016 NXP. 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 NXP 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 $(RTE_SDK)/mk/rte.vars.mk
+
+#
+# library name
+#
+LIB = librte_bus_fslmc.a
+
+ifeq ($(CONFIG_RTE_LIBRTE_DPAA2_PMD),y)
+CONFIG_RTE_LIBRTE_FSLMC_BUS = $(CONFIG_RTE_LIBRTE_DPAA2_PMD)
+endif
+
+ifeq ($(CONFIG_RTE_LIBRTE_DPAA2_DEBUG_INIT),y)
+CFLAGS += -O0 -g
+CFLAGS += "-Wno-error"
+else
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+endif
+CFLAGS += "-Wno-strict-aliasing"
+
+CFLAGS += -I$(RTE_SDK)/drivers/bus/fslmc
+CFLAGS += -I$(RTE_SDK)/lib/librte_eal/linuxapp/eal
+
+# versioning export map
+EXPORT_MAP := rte_bus_fslmc_version.map
+
+# library version
+LIBABIVER := 1
+
+SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += fslmc_bus.c
+
+# library dependencies
+DEPDIRS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += lib/librte_eal
+
+include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
new file mode 100644
index 0000000..8a4f519
--- /dev/null
+++ b/drivers/bus/fslmc/fslmc_bus.c
@@ -0,0 +1,125 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) 2016 NXP. 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 NXP 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 <string.h>
+#include <dirent.h>
+
+#include <rte_log.h>
+#include <rte_bus.h>
+#include <rte_eal_memconfig.h>
+#include <rte_malloc.h>
+#include <rte_devargs.h>
+#include <rte_memcpy.h>
+#include <rte_ethdev.h>
+
+#include "rte_fslmc.h"
+
+#define FSLMC_BUS_LOG(level, fmt, args...) \
+	RTE_LOG(level, EAL, "%s(): " fmt "\n", __func__, ##args)
+
+struct rte_fslmc_bus rte_fslmc_bus;
+
+static int
+rte_fslmc_scan(void)
+{
+	return 0;
+}
+
+static int
+rte_fslmc_match(struct rte_dpaa2_driver *dpaa2_drv,
+		struct rte_dpaa2_device *dpaa2_dev)
+{
+	if (dpaa2_drv->drv_type == dpaa2_dev->dev_type)
+		return 0;
+
+	return 1;
+}
+
+static int
+rte_fslmc_probe(void)
+{
+	int ret = -1;
+	struct rte_dpaa2_device *dev;
+	struct rte_dpaa2_driver *drv;
+
+	TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next) {
+		TAILQ_FOREACH(drv, &rte_fslmc_bus.driver_list, next) {
+			ret = rte_fslmc_match(drv, dev);
+			if (ret)
+				continue;
+
+			if (!drv->probe)
+				continue;
+
+			ret = drv->probe(drv, dev);
+			if (ret)
+				FSLMC_BUS_LOG(ERR, "Unable to probe.\n");
+			break;
+		}
+	}
+	return ret;
+}
+
+/*register a fslmc bus based dpaa2 driver */
+void
+rte_fslmc_driver_register(struct rte_dpaa2_driver *driver)
+{
+	RTE_VERIFY(driver);
+
+	TAILQ_INSERT_TAIL(&rte_fslmc_bus.driver_list, driver, next);
+	/* Update Bus references */
+	driver->fslmc_bus = &rte_fslmc_bus;
+}
+
+/*un-register a fslmc bus based dpaa2 driver */
+void
+rte_fslmc_driver_unregister(struct rte_dpaa2_driver *driver)
+{
+	struct rte_fslmc_bus *fslmc_bus;
+
+	fslmc_bus = driver->fslmc_bus;
+
+	TAILQ_REMOVE(&fslmc_bus->driver_list, driver, next);
+	/* Update Bus references */
+	driver->fslmc_bus = NULL;
+}
+
+struct rte_fslmc_bus rte_fslmc_bus = {
+	.bus = {
+		.scan = rte_fslmc_scan,
+		.probe = rte_fslmc_probe,
+	},
+	.device_list = TAILQ_HEAD_INITIALIZER(rte_fslmc_bus.device_list),
+	.driver_list = TAILQ_HEAD_INITIALIZER(rte_fslmc_bus.driver_list),
+};
+
+RTE_REGISTER_BUS(FSLMC_BUS_NAME, rte_fslmc_bus.bus);
diff --git a/drivers/bus/fslmc/rte_bus_fslmc_version.map b/drivers/bus/fslmc/rte_bus_fslmc_version.map
new file mode 100644
index 0000000..41c80d9
--- /dev/null
+++ b/drivers/bus/fslmc/rte_bus_fslmc_version.map
@@ -0,0 +1,8 @@
+DPDK_17.05 {
+	global:
+
+	rte_fslmc_driver_register;
+	rte_fslmc_driver_unregister;
+
+	local: *;
+};
diff --git a/drivers/bus/fslmc/rte_fslmc.h b/drivers/bus/fslmc/rte_fslmc.h
new file mode 100644
index 0000000..040ab95
--- /dev/null
+++ b/drivers/bus/fslmc/rte_fslmc.h
@@ -0,0 +1,148 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) 2016 NXP. 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 NXP 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_FSLMC_H_
+#define _RTE_FSLMC_H_
+
+/**
+ * @file
+ *
+ * RTE FSLMC Bus Interface
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <errno.h>
+#include <sys/queue.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#include <rte_debug.h>
+#include <rte_interrupts.h>
+#include <rte_dev.h>
+#include <rte_bus.h>
+
+/** Name of FSLMC Bus */
+#define FSLMC_BUS_NAME "FSLMC"
+
+struct rte_dpaa2_driver;
+
+/* DPAA2 Device and Driver lists for FSLMC bus */
+TAILQ_HEAD(rte_fslmc_device_list, rte_dpaa2_device);
+TAILQ_HEAD(rte_fslmc_driver_list, rte_dpaa2_driver);
+
+extern struct rte_fslmc_bus rte_fslmc_bus;
+
+/**
+ * A structure describing a DPAA2 device.
+ */
+struct rte_dpaa2_device {
+	TAILQ_ENTRY(rte_dpaa2_device) next; /**< Next probed DPAA2 device. */
+	struct rte_device device;           /**< Inherit core device */
+	union {
+		struct rte_eth_dev *eth_dev;        /**< ethernet device */
+		struct rte_cryptodev *cryptodev;    /**< Crypto Device */
+	};
+	uint16_t dev_type;                  /**< Device Type */
+	uint16_t object_id;             /**< DPAA2 Object ID */
+	struct rte_intr_handle intr_handle; /**< Interrupt handle */
+	struct rte_dpaa2_driver *driver;    /**< Associated driver */
+};
+
+typedef int (*rte_dpaa2_probe_t)(struct rte_dpaa2_driver *dpaa2_drv,
+				 struct rte_dpaa2_device *dpaa2_dev);
+typedef int (*rte_dpaa2_remove_t)(struct rte_dpaa2_device *dpaa2_dev);
+
+/**
+ * A structure describing a DPAA2 driver.
+ */
+struct rte_dpaa2_driver {
+	TAILQ_ENTRY(rte_dpaa2_driver) next; /**< Next in list. */
+	struct rte_driver driver;           /**< Inherit core driver. */
+	struct rte_fslmc_bus *fslmc_bus;    /**< FSLMC bus reference */
+	uint32_t drv_flags;                 /**< Flags for controlling device.*/
+	uint16_t drv_type;                  /**< Driver Type */
+	rte_dpaa2_probe_t probe;
+	rte_dpaa2_remove_t remove;
+};
+
+/*
+ * FSLMC bus
+ */
+struct rte_fslmc_bus {
+	struct rte_bus bus;     /**< Generic Bus object */
+	struct rte_fslmc_device_list device_list;
+				/**< FSLMC DPAA2 Device list */
+	struct rte_fslmc_driver_list driver_list;
+				/**< FSLMC DPAA2 Driver list */
+	int device_count;
+				/**< Optional: Count of devices on bus */
+};
+
+/**
+ * Register a DPAA2 driver.
+ *
+ * @param driver
+ *   A pointer to a rte_dpaa2_driver structure describing the driver
+ *   to be registered.
+ */
+void rte_fslmc_driver_register(struct rte_dpaa2_driver *driver);
+
+/**
+ * Unregister a DPAA2 driver.
+ *
+ * @param driver
+ *   A pointer to a rte_dpaa2_driver structure describing the driver
+ *   to be unregistered.
+ */
+void rte_fslmc_driver_unregister(struct rte_dpaa2_driver *driver);
+
+/** Helper for DPAA2 device registration from driver (eth, crypto) instance */
+#define RTE_PMD_REGISTER_DPAA2(nm, dpaa2_drv) \
+RTE_INIT(dpaa2initfn_ ##nm); \
+static void dpaa2initfn_ ##nm(void) \
+{\
+	(dpaa2_drv).driver.name = RTE_STR(nm);\
+	rte_fslmc_driver_register(&dpaa2_drv); \
+} \
+RTE_PMD_EXPORT_NAME(nm, __COUNTER__)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_FSLMC_H_ */
-- 
1.9.1