[dpdk-dev] [PATCH v1 1/9] raw/octeontx2_dma: add build infra and device probe

[<jerinj@marvell.com>]

From: Satha Rao <skoteshwar@marvell.com>

Add the make and meson based build infrastructure along
with the DMA device probe.

Signed-off-by: Satha Rao <skoteshwar@marvell.com>
Signed-off-by: Vamsi Attunuru <vattunuru@marvell.com>
---
 config/common_base                            |   5 +
 drivers/raw/Makefile                          |   1 +
 drivers/raw/meson.build                       |   2 +-
 drivers/raw/octeontx2_dma/Makefile            |  31 ++++++
 drivers/raw/octeontx2_dma/meson.build         |  18 ++++
 drivers/raw/octeontx2_dma/otx2_dpi_rawdev.c   | 102 ++++++++++++++++++
 .../rte_pmd_octeontx2_dma_version.map         |   4 +
 mk/rte.app.mk                                 |   1 +
 8 files changed, 163 insertions(+), 1 deletion(-)
 create mode 100644 drivers/raw/octeontx2_dma/Makefile
 create mode 100644 drivers/raw/octeontx2_dma/meson.build
 create mode 100644 drivers/raw/octeontx2_dma/otx2_dpi_rawdev.c
 create mode 100644 drivers/raw/octeontx2_dma/rte_pmd_octeontx2_dma_version.map

diff --git a/config/common_base b/config/common_base
index 4a3de0360..62e4cda01 100644
--- a/config/common_base
+++ b/config/common_base
@@ -741,6 +741,11 @@ CONFIG_RTE_LIBRTE_PMD_DPAA2_QDMA_RAWDEV=n
 #
 CONFIG_RTE_LIBRTE_PMD_IFPGA_RAWDEV=y
 
+#
+# Compile PMD for octeontx2 DMA device
+#
+CONFIG_RTE_LIBRTE_PMD_OCTEONTX2_DMA_RAWDEV=y
+
 #
 # Compile librte_ring
 #
diff --git a/drivers/raw/Makefile b/drivers/raw/Makefile
index 8e29b4a56..6af639ba2 100644
--- a/drivers/raw/Makefile
+++ b/drivers/raw/Makefile
@@ -10,5 +10,6 @@ DIRS-$(CONFIG_RTE_LIBRTE_PMD_DPAA2_CMDIF_RAWDEV) += dpaa2_cmdif
 DIRS-$(CONFIG_RTE_LIBRTE_PMD_DPAA2_QDMA_RAWDEV) += dpaa2_qdma
 endif
 DIRS-$(CONFIG_RTE_LIBRTE_PMD_IFPGA_RAWDEV) += ifpga_rawdev
+DIRS-$(CONFIG_RTE_LIBRTE_PMD_OCTEONTX2_DMA_RAWDEV) += octeontx2_dma
 
 include $(RTE_SDK)/mk/rte.subdir.mk
diff --git a/drivers/raw/meson.build b/drivers/raw/meson.build
index a61cdccef..00475d651 100644
--- a/drivers/raw/meson.build
+++ b/drivers/raw/meson.build
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # Copyright 2018 NXP
 
-drivers = ['skeleton_rawdev', 'dpaa2_cmdif', 'dpaa2_qdma', 'ifpga_rawdev']
+drivers = ['skeleton_rawdev', 'dpaa2_cmdif', 'dpaa2_qdma', 'ifpga_rawdev', 'octeontx2_dma']
 std_deps = ['rawdev']
 config_flag_fmt = 'RTE_LIBRTE_PMD_@0@_RAWDEV'
 driver_name_fmt = 'rte_pmd_@0@'
diff --git a/drivers/raw/octeontx2_dma/Makefile b/drivers/raw/octeontx2_dma/Makefile
new file mode 100644
index 000000000..7335d0ffa
--- /dev/null
+++ b/drivers/raw/octeontx2_dma/Makefile
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(C) 2019 Marvell International Ltd.
+#
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# library name
+LIB = librte_pmd_octeontx2_dma.a
+
+CFLAGS += -DALLOW_EXPERIMENTAL_API -O3 $(WERROR_FLAGS)
+CFLAGS += -I$(RTE_SDK)/drivers/common/octeontx2/
+CFLAGS += -I$(RTE_SDK)/drivers/mempool/octeontx2/
+CFLAGS += -I$(RTE_SDK)/drivers/raw/octeontx2_dma/
+LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring -lrte_rawdev
+LDLIBS += -lrte_common_octeontx2 -lrte_kvargs -lrte_bus_pci
+
+ifneq ($(CONFIG_RTE_ARCH_64),y)
+CFLAGS += -Wno-int-to-pointer-cast
+CFLAGS += -Wno-pointer-to-int-cast
+endif
+
+EXPORT_MAP := rte_pmd_octeontx2_dma_version.map
+
+LIBABIVER := 1
+
+#
+# all source are stored in SRCS-y
+#
+SRCS-$(CONFIG_RTE_LIBRTE_PMD_OCTEONTX2_DMA_RAWDEV) += otx2_dpi_rawdev.c
+
+include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/drivers/raw/octeontx2_dma/meson.build b/drivers/raw/octeontx2_dma/meson.build
new file mode 100644
index 000000000..1281268aa
--- /dev/null
+++ b/drivers/raw/octeontx2_dma/meson.build
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(C) 2019 Marvell International Ltd.
+#
+
+deps += ['rawdev', 'ring', 'kvargs', 'bus_pci', 'common_octeontx2', 'mempool_octeontx2']
+sources = files('otx2_dpi_rawdev.c')
+
+extra_flags = []
+# This integrated controller runs only on a arm64 machine, remove 32bit warnings
+if not dpdk_conf.get('RTE_ARCH_64')
+	extra_flags += ['-Wno-int-to-pointer-cast', '-Wno-pointer-to-int-cast']
+endif
+
+foreach flag: extra_flags
+	if cc.has_argument(flag)
+		cflags += flag
+	endif
+endforeach
diff --git a/drivers/raw/octeontx2_dma/otx2_dpi_rawdev.c b/drivers/raw/octeontx2_dma/otx2_dpi_rawdev.c
new file mode 100644
index 000000000..01422c299
--- /dev/null
+++ b/drivers/raw/octeontx2_dma/otx2_dpi_rawdev.c
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2019 Marvell International Ltd.
+ */
+
+#include <string.h>
+#include <unistd.h>
+
+#include <rte_bus.h>
+#include <rte_bus_pci.h>
+#include <rte_common.h>
+#include <rte_devargs.h>
+#include <rte_eal.h>
+#include <rte_errno.h>
+#include <rte_log.h>
+#include <rte_pci.h>
+#include <rte_per_lcore.h>
+#include <rte_rawdev.h>
+#include <rte_rawdev_pmd.h>
+
+#include <otx2_mempool.h>
+
+static const struct rte_pci_id pci_dma_map[] = {
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_CAVIUM,
+			       PCI_DEVID_OCTEONTX2_DPI_VF)
+	},
+	{
+		.vendor_id = 0,
+	},
+};
+
+static int
+otx2_dpi_rawdev_probe(struct rte_pci_driver *pci_drv __rte_unused,
+		      struct rte_pci_device *pci_dev)
+{
+	char name[RTE_RAWDEV_NAME_MAX_LEN];
+	struct rte_rawdev *rawdev;
+
+	/* For secondary processes, the primary has done all the work */
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	if (pci_dev->mem_resource[0].addr == NULL) {
+		otx2_dpi_dbg("Empty bars %p %p", pci_dev->mem_resource[0].addr,
+			     pci_dev->mem_resource[2].addr);
+		return -ENODEV;
+	}
+
+	memset(name, 0, sizeof(name));
+	snprintf(name, RTE_RAWDEV_NAME_MAX_LEN, "DPI:%x:%02x.%x",
+		 pci_dev->addr.bus, pci_dev->addr.devid,
+		 pci_dev->addr.function);
+
+	/* Allocate device structure */
+	rawdev = rte_rawdev_pmd_allocate(name, 0, rte_socket_id());
+	if (rawdev == NULL) {
+		otx2_err("Rawdev allocation failed");
+		return -EINVAL;
+	}
+
+	rawdev->device = &pci_dev->device;
+	rawdev->driver_name = pci_dev->driver->driver.name;
+
+	return 0;
+}
+
+static int
+otx2_dpi_rawdev_remove(struct rte_pci_device *pci_dev)
+{
+	char name[RTE_RAWDEV_NAME_MAX_LEN];
+	struct rte_rawdev *rawdev;
+
+	if (pci_dev == NULL) {
+		otx2_dpi_dbg("Invalid pci_dev of the device!");
+		return -EINVAL;
+	}
+
+	memset(name, 0, sizeof(name));
+	snprintf(name, RTE_RAWDEV_NAME_MAX_LEN, "DPI:%x:%02x.%x",
+		 pci_dev->addr.bus, pci_dev->addr.devid,
+		 pci_dev->addr.function);
+
+	rawdev = rte_rawdev_pmd_get_named_dev(name);
+	if (rawdev == NULL) {
+		otx2_dpi_dbg("Invalid device name (%s)", name);
+		return -EINVAL;
+	}
+
+	/* rte_rawdev_close is called by pmd_release */
+	return rte_rawdev_pmd_release(rawdev);
+}
+
+static struct rte_pci_driver rte_dpi_rawdev_pmd = {
+	.id_table  = pci_dma_map,
+	.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_IOVA_AS_VA,
+	.probe     = otx2_dpi_rawdev_probe,
+	.remove    = otx2_dpi_rawdev_remove,
+};
+
+RTE_PMD_REGISTER_PCI(dpi_rawdev_pci_driver, rte_dpi_rawdev_pmd);
+RTE_PMD_REGISTER_PCI_TABLE(dpi_rawdev_pci_driver, pci_dma_map);
+RTE_PMD_REGISTER_KMOD_DEP(dpi_rawdev_pci_driver, "vfio-pci");
diff --git a/drivers/raw/octeontx2_dma/rte_pmd_octeontx2_dma_version.map b/drivers/raw/octeontx2_dma/rte_pmd_octeontx2_dma_version.map
new file mode 100644
index 000000000..fc8c95e91
--- /dev/null
+++ b/drivers/raw/octeontx2_dma/rte_pmd_octeontx2_dma_version.map
@@ -0,0 +1,4 @@
+DPDK_19.05 {
+
+	local: *;
+};
diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index cd89ccfd5..152bd8b14 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -309,6 +309,7 @@ ifeq ($(CONFIG_RTE_LIBRTE_IFPGA_BUS),y)
 _LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_IFPGA_RAWDEV)   += -lrte_pmd_ifpga_rawdev
 _LDLIBS-$(CONFIG_RTE_LIBRTE_IPN3KE_PMD)       += -lrte_pmd_ipn3ke
 endif # CONFIG_RTE_LIBRTE_IFPGA_BUS
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_OCTEONTX2_DMA_RAWDEV) += -lrte_pmd_octeontx2_dma
 endif # CONFIG_RTE_LIBRTE_RAWDEV
 
 endif # !CONFIG_RTE_BUILD_SHARED_LIBS
-- 
2.21.0