[PATCHv2 11/34] bus/fslmc: add vfio support

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

Add support for using VFIO for dpaa2 based fsl-mc bus.

There are some differences in the way vfio used for fsl-mc bus
from the eal vfio.
 - The scanning of bus for individual objects on the basis of
   the DPRC container.
 - The use and mapping of MC portal for object access

With the evolution of bus model, they canbe further aligned with
eal vfio code.

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 doc/guides/nics/features/dpaa2.ini |   1 +
 drivers/bus/fslmc/Makefile         |   2 +
 drivers/bus/fslmc/fslmc_bus.c      |  26 +-
 drivers/bus/fslmc/fslmc_vfio.c     | 471 +++++++++++++++++++++++++++++++++++++
 drivers/bus/fslmc/fslmc_vfio.h     |  74 ++++++
 5 files changed, 570 insertions(+), 4 deletions(-)
 create mode 100644 drivers/bus/fslmc/fslmc_vfio.c
 create mode 100644 drivers/bus/fslmc/fslmc_vfio.h

diff --git a/doc/guides/nics/features/dpaa2.ini b/doc/guides/nics/features/dpaa2.ini
index b2ad6ec..b176208 100644
--- a/doc/guides/nics/features/dpaa2.ini
+++ b/doc/guides/nics/features/dpaa2.ini
@@ -4,5 +4,6 @@
 ; Refer to default.ini for the full list of available PMD features.
 ;
 [Features]
+Linux VFIO           = Y
 ARMv8                = Y
 Usage doc            = Y
diff --git a/drivers/bus/fslmc/Makefile b/drivers/bus/fslmc/Makefile
index f5da4e0..54f757b 100644
--- a/drivers/bus/fslmc/Makefile
+++ b/drivers/bus/fslmc/Makefile
@@ -41,6 +41,7 @@ CFLAGS += "-Wno-strict-aliasing"
 
 CFLAGS += -I$(RTE_SDK)/drivers/bus/fslmc
 CFLAGS += -I$(RTE_SDK)/drivers/bus/fslmc/mc
+CFLAGS += -I$(RTE_SDK)/lib/librte_eal/linuxapp/eal
 
 # versioning export map
 EXPORT_MAP := rte_pmd_fslmcbus_version.map
@@ -55,6 +56,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += \
         mc/dpio.c \
         mc/mc_sys.c
 
+SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += fslmc_vfio.c
 SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += fslmc_bus.c
 
 # library dependencies
diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
index cbf7600..ef38b3b 100644
--- a/drivers/bus/fslmc/fslmc_bus.c
+++ b/drivers/bus/fslmc/fslmc_bus.c
@@ -42,21 +42,39 @@
 #include <rte_ethdev.h>
 
 #include "rte_fslmc.h"
+#include "fslmc_vfio.h"
 
 #define FSLMC_BUS_LOG(level, fmt, args...) \
 	RTE_LOG(level, EAL, "%s(): " fmt "\n", __func__, ##args)
 
 static
-int rte_fslmc_scan(struct rte_bus *bus_d __rte_unused)
+int rte_fslmc_scan(struct rte_bus *bus_d)
 {
+	if (fslmc_vfio_setup_group()) {
+		FSLMC_BUS_LOG(ERR, "fslmc: Unable to setup VFIO");
+		return -1;
+	}
+	if (fslmc_vfio_process_group(bus_d)) {
+		FSLMC_BUS_LOG(ERR, "fslmc: Unable to setup devices");
+		return -1;
+	}
+	RTE_LOG(INFO, EAL, "fslmc: Bus scan completed");
 	return 0;
 }
 
 static
-int rte_fslmc_match(struct rte_driver *drv __rte_unused,
-		    struct rte_device *dev __rte_unused)
+int rte_fslmc_match(struct rte_driver *drv, struct rte_device *dev)
 {
-	return 0;
+	struct rte_dpaa2_driver *dpaa2_drv;
+	struct rte_dpaa2_device *dpaa2_dev;
+
+	dpaa2_drv = container_of(drv, struct rte_dpaa2_driver, driver);
+	dpaa2_dev = container_of(dev, struct rte_dpaa2_device, device);
+
+	if (dpaa2_drv->drv_type == dpaa2_dev->dev_type)
+		return 0;
+
+	return 1;
 }
 
 struct rte_bus fslmc_bus = {
diff --git a/drivers/bus/fslmc/fslmc_vfio.c b/drivers/bus/fslmc/fslmc_vfio.c
new file mode 100644
index 0000000..eae6495
--- /dev/null
+++ b/drivers/bus/fslmc/fslmc_vfio.c
@@ -0,0 +1,471 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) 2015-2016 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
+ *   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 Freescale Semiconductor, Inc 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 <unistd.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <string.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/vfs.h>
+#include <libgen.h>
+#include <dirent.h>
+#include <sys/eventfd.h>
+
+#include <rte_mbuf.h>
+#include <rte_ethdev.h>
+#include <rte_malloc.h>
+#include <rte_memcpy.h>
+#include <rte_string_fns.h>
+#include <rte_cycles.h>
+#include <rte_kvargs.h>
+#include <rte_dev.h>
+#include <rte_ethdev.h>
+#include <rte_bus.h>
+
+#include "rte_fslmc.h"
+#include "fslmc_vfio.h"
+
+#define VFIO_MAX_CONTAINERS	1
+
+#define FSLMC_VFIO_LOG(level, fmt, args...) \
+	RTE_LOG(level, EAL, "%s(): " fmt "\n", __func__, ##args)
+
+/** Pathname of FSL-MC devices directory. */
+#define SYSFS_DPAA2_MC_DEVICES "/sys/bus/fsl-mc/devices"
+
+/* Number of VFIO containers & groups with in */
+static struct fslmc_vfio_group vfio_groups[VFIO_MAX_GRP];
+static struct fslmc_vfio_container vfio_containers[VFIO_MAX_CONTAINERS];
+static int container_device_fd;
+void *(*mcp_ptr_list);
+static uint32_t mcp_id;
+
+static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
+{
+	struct fslmc_vfio_container *container;
+	int i, fd, ret;
+
+	/* Try connecting to vfio container if already created */
+	for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
+		container = &vfio_containers[i];
+		if (!ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER,
+			   &container->fd)) {
+			FSLMC_VFIO_LOG(INFO, "Container pre-exists with"
+				    " FD[0x%x] for this group",
+				    container->fd);
+			vfio_group->container = container;
+			return 0;
+		}
+	}
+
+	/* Opens main vfio file descriptor which represents the "container" */
+	fd = vfio_get_container_fd();
+	if (fd < 0) {
+		FSLMC_VFIO_LOG(ERR, "Failed to open VFIO container");
+		return -errno;
+	}
+
+	/* Check whether support for SMMU type IOMMU present or not */
+	if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
+		/* Connect group to container */
+		ret = ioctl(vfio_group->fd, VFIO_GROUP_SET_CONTAINER, &fd);
+		if (ret) {
+			FSLMC_VFIO_LOG(ERR, "Failed to setup group container");
+			close(fd);
+			return -errno;
+		}
+
+		ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU);
+		if (ret) {
+			FSLMC_VFIO_LOG(ERR, "Failed to setup VFIO iommu");
+			close(fd);
+			return -errno;
+		}
+	} else {
+		FSLMC_VFIO_LOG(ERR, "No supported IOMMU available");
+		close(fd);
+		return -EINVAL;
+	}
+
+	container = NULL;
+	for (i = 0; i < VFIO_MAX_CONTAINERS; i++) {
+		if (vfio_containers[i].used)
+			continue;
+		FSLMC_VFIO_LOG(DEBUG, "Unused container at index %d", i);
+		container = &vfio_containers[i];
+	}
+	if (!container) {
+		FSLMC_VFIO_LOG(ERR, "No free container found");
+		close(fd);
+		return -ENOMEM;
+	}
+
+	container->used = 1;
+	container->fd = fd;
+	container->group_list[container->index] = vfio_group;
+	vfio_group->container = container;
+	container->index++;
+	return 0;
+}
+
+int vfio_dmamap_mem_region(uint64_t vaddr,
+			   uint64_t iova,
+			   uint64_t size)
+{
+	struct fslmc_vfio_group *group;
+	struct vfio_iommu_type1_dma_map dma_map = {
+		.argsz = sizeof(dma_map),
+		.flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
+	};
+
+	dma_map.vaddr = vaddr;
+	dma_map.size = size;
+	dma_map.iova = iova;
+
+	/* SET DMA MAP for IOMMU */
+	group = &vfio_groups[0];
+	if (ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &dma_map)) {
+		FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA (errno = %d)", errno);
+		return -1;
+	}
+	return 0;
+}
+static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
+{
+	int64_t v_addr = (int64_t)MAP_FAILED;
+	int32_t ret, mc_fd;
+
+	struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
+	struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
+
+	/* getting the mcp object's fd*/
+	mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
+	if (mc_fd < 0) {
+		FSLMC_VFIO_LOG(ERR, "error in VFIO get device %s fd from group"
+			    " %d", mcp_obj, group->fd);
+		return v_addr;
+	}
+
+	/* getting device info*/
+	ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
+	if (ret < 0) {
+		FSLMC_VFIO_LOG(ERR, "error in VFIO getting DEVICE_INFO");
+		goto MC_FAILURE;
+	}
+
+	/* getting device region info*/
+	ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, &reg_info);
+	if (ret < 0) {
+		FSLMC_VFIO_LOG(ERR, "error in VFIO getting REGION_INFO");
+		goto MC_FAILURE;
+	}
+
+	FSLMC_VFIO_LOG(DEBUG, "region offset = %llx  , region size = %llx",
+		     reg_info.offset, reg_info.size);
+
+	v_addr = (uint64_t)mmap(NULL, reg_info.size,
+		PROT_WRITE | PROT_READ, MAP_SHARED,
+		mc_fd, reg_info.offset);
+
+MC_FAILURE:
+	close(mc_fd);
+
+	return v_addr;
+}
+
+/* Following function shall fetch total available list of MC devices
+ * from VFIO container & populate private list of devices and other
+ * data structures
+ */
+int fslmc_vfio_process_group(struct rte_bus *bus __rte_unused)
+{
+	struct fslmc_vfio_device *vdev;
+	struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
+	char *temp_obj, *object_type __rte_unused, *mcp_obj, *dev_name;
+	int32_t object_id, i, dev_fd;
+	DIR *d;
+	struct dirent *dir;
+	char path[PATH_MAX];
+	int64_t v_addr;
+	int ndev_count;
+	struct fslmc_vfio_group *group = &vfio_groups[0];
+	static int process_once;
+
+	/* if already done once */
+	if (process_once) {
+		FSLMC_VFIO_LOG(DEBUG, "Already scanned once - re-scan "
+			    "not supported");
+		return 0;
+	}
+	process_once = 0;
+
+	sprintf(path, "/sys/kernel/iommu_groups/%d/devices", group->groupid);
+
+	d = opendir(path);
+	if (!d) {
+		FSLMC_VFIO_LOG(ERR, "Unable to open directory %s", path);
+		return -1;
+	}
+
+	/*Counting the number of devices in a group and getting the mcp ID*/
+	ndev_count = 0;
+	mcp_obj = NULL;
+	while ((dir = readdir(d)) != NULL) {
+		if (dir->d_type == DT_LNK) {
+			ndev_count++;
+			if (!strncmp("dpmcp", dir->d_name, 5)) {
+				if (mcp_obj)
+					free(mcp_obj);
+				mcp_obj = malloc(sizeof(dir->d_name));
+				if (!mcp_obj) {
+					FSLMC_VFIO_LOG(ERR, "mcp obj:Unable to"
+						    " allocate memory");
+					return -ENOMEM;
+				}
+				strcpy(mcp_obj, dir->d_name);
+				temp_obj = strtok(dir->d_name, ".");
+				temp_obj = strtok(NULL, ".");
+				sscanf(temp_obj, "%d", &mcp_id);
+			}
+		}
+	}
+	closedir(d);
+
+	if (!mcp_obj) {
+		FSLMC_VFIO_LOG(ERR, "DPAA2 MCP Object not Found");
+		return -ENODEV;
+	}
+	RTE_LOG(INFO, EAL, "fslmc: DPRC contains = %d devices\n", ndev_count);
+
+	/* Allocate the memory depends upon number of objects in a group*/
+	group->vfio_device = (struct fslmc_vfio_device *)malloc(ndev_count *
+			     sizeof(struct fslmc_vfio_device));
+	if (!(group->vfio_device)) {
+		FSLMC_VFIO_LOG(ERR, "vfio device: Unable to allocate memory\n");
+		free(mcp_obj);
+		return -ENOMEM;
+	}
+
+	/* Allocate memory for MC Portal list */
+	mcp_ptr_list = malloc(sizeof(void *) * 1);
+	if (!mcp_ptr_list) {
+		FSLMC_VFIO_LOG(ERR, "portal list: Unable to allocate memory!");
+		free(mcp_obj);
+		goto FAILURE;
+	}
+
+	v_addr = vfio_map_mcp_obj(group, mcp_obj);
+	free(mcp_obj);
+	if (v_addr == (int64_t)MAP_FAILED) {
+		FSLMC_VFIO_LOG(ERR, "Error mapping region (errno = %d)", errno);
+		goto FAILURE;
+	}
+
+	FSLMC_VFIO_LOG(DEBUG, "DPAA2 MC has VIR_ADD = %ld", v_addr);
+
+	mcp_ptr_list[0] = (void *)v_addr;
+
+	d = opendir(path);
+	if (!d) {
+		FSLMC_VFIO_LOG(ERR, "Unable to open %s Directory", path);
+		goto FAILURE;
+	}
+
+	i = 0;
+	FSLMC_VFIO_LOG(DEBUG, "DPAA2 - Parsing devices:");
+	/* Parsing each object and initiating them*/
+	while ((dir = readdir(d)) != NULL) {
+		if (dir->d_type != DT_LNK)
+			continue;
+		if (!strncmp("dprc", dir->d_name, 4) ||
+		    !strncmp("dpmcp", dir->d_name, 5))
+			continue;
+		dev_name = malloc(sizeof(dir->d_name));
+		if (!dev_name) {
+			FSLMC_VFIO_LOG(ERR, "name: Unable to allocate memory");
+			goto FAILURE;
+		}
+		strcpy(dev_name, dir->d_name);
+		object_type = strtok(dir->d_name, ".");
+		temp_obj = strtok(NULL, ".");
+		sscanf(temp_obj, "%d", &object_id);
+		FSLMC_VFIO_LOG(DEBUG, " - %s ", dev_name);
+
+		/* getting the device fd*/
+		dev_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, dev_name);
+		if (dev_fd < 0) {
+			FSLMC_VFIO_LOG(ERR, "VFIO_GROUP_GET_DEVICE_FD error"
+				    " Device fd: %s, Group: %d",
+				    dev_name, group->fd);
+			free(dev_name);
+			goto FAILURE;
+		}
+
+		free(dev_name);
+		vdev = &group->vfio_device[group->object_index++];
+		vdev->fd = dev_fd;
+		vdev->index = i;
+		i++;
+		/* Get Device inofrmation */
+		if (ioctl(vdev->fd, VFIO_DEVICE_GET_INFO, &device_info)) {
+			FSLMC_VFIO_LOG(ERR, "DPAA2 VFIO_DEVICE_GET_INFO fail");
+			goto FAILURE;
+		}
+	}
+	closedir(d);
+
+	return 0;
+
+FAILURE:
+	free(group->vfio_device);
+	group->vfio_device = NULL;
+	return -1;
+}
+
+
+int fslmc_vfio_setup_group(void)
+{
+	char path[PATH_MAX];
+	char iommu_group_path[PATH_MAX], *group_name;
+	struct fslmc_vfio_group *group = NULL;
+	struct stat st;
+	int groupid;
+	int ret, len, i;
+	char *container;
+	struct vfio_group_status status = { .argsz = sizeof(status) };
+
+	/* if already done once */
+	if (container_device_fd)
+		return 0;
+
+	container = getenv("DPRC");
+
+	if (container == NULL) {
+		FSLMC_VFIO_LOG(ERR, "VFIO container not set in env DPRC");
+		return -1;
+	}
+	RTE_LOG(INFO, PMD, "DPAA2: Processing Container = %s\n", container);
+	snprintf(path, sizeof(path), "%s/%s",
+		 SYSFS_DPAA2_MC_DEVICES, container);
+
+	/* Check whether fsl-mc container exists or not */
+	FSLMC_VFIO_LOG(DEBUG, "container device path = %s", path);
+	if (stat(path, &st) < 0) {
+		FSLMC_VFIO_LOG(ERR, "Error (%d) getting FSL-MC dev (%s)",
+			     errno,  path);
+		return -errno;
+	}
+
+	/* DPRC container exists. Now checkout the IOMMU Group */
+	strncat(path, "/iommu_group", sizeof(path) - strlen(path) - 1);
+
+	len = readlink(path, iommu_group_path, PATH_MAX);
+	if (len == -1) {
+		FSLMC_VFIO_LOG(ERR, "Error no iommu_group for device"
+			       "   %s: len = %d, (errno = %d)",
+			       path, len, errno);
+		return -errno;
+	}
+
+	iommu_group_path[len] = 0;
+	group_name = basename(iommu_group_path);
+	if (sscanf(group_name, "%d", &groupid) != 1) {
+		FSLMC_VFIO_LOG(ERR, "error in VFIO groupname reading %s", path);
+		return -errno;
+	}
+
+	FSLMC_VFIO_LOG(DEBUG, "VFIO iommu group id = %d", groupid);
+
+	/* Check if group already exists */
+	for (i = 0; i < VFIO_MAX_GRP; i++) {
+		group = &vfio_groups[i];
+		if (group->groupid == groupid) {
+			FSLMC_VFIO_LOG(ERR, "groupid already exists %d",
+				     groupid);
+			return 0;
+		}
+	}
+
+	/* Open the VFIO file corresponding to the IOMMU group */
+	snprintf(path, sizeof(path), "/dev/vfio/%d", groupid);
+
+	group->fd = open(path, O_RDWR);
+	if (group->fd < 0) {
+		FSLMC_VFIO_LOG(ERR, " VFIO error opening %s", path);
+		return -1;
+	}
+
+	/* Test & Verify that group is VIABLE & AVAILABLE */
+	if (ioctl(group->fd, VFIO_GROUP_GET_STATUS, &status)) {
+		FSLMC_VFIO_LOG(ERR, " VFIO error getting group status");
+		close(group->fd);
+		return -1;
+	}
+	if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
+		FSLMC_VFIO_LOG(ERR, "VFIO group not viable");
+		close(group->fd);
+		return -1;
+	}
+	/* Since Group is VIABLE, Store the groupid */
+	group->groupid = groupid;
+
+	/* check if group does not have a container yet */
+	if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
+		/* Now connect this IOMMU group to given container */
+		if (vfio_connect_container(group)) {
+			FSLMC_VFIO_LOG(ERR, "VFIO error connecting container"
+				       " with groupid %d", groupid);
+			close(group->fd);
+			return -1;
+		}
+	}
+
+	/* Get Device information */
+	ret = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, container);
+	if (ret < 0) {
+		FSLMC_VFIO_LOG(ERR, "VFIO error getting device %s fd from"
+			       " group  %d", container, group->groupid);
+		return ret;
+	}
+	container_device_fd = ret;
+	FSLMC_VFIO_LOG(DEBUG, "VFIO Container FD is [0x%X]",
+		     container_device_fd);
+
+	return 0;
+}
diff --git a/drivers/bus/fslmc/fslmc_vfio.h b/drivers/bus/fslmc/fslmc_vfio.h
new file mode 100644
index 0000000..c5a42fe
--- /dev/null
+++ b/drivers/bus/fslmc/fslmc_vfio.h
@@ -0,0 +1,74 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) 2015-2016 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
+ *   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 Freescale Semiconductor, Inc 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 _FSLMC_VFIO_H_
+#define _FSLMC_VFIO_H_
+
+#include "eal_vfio.h"
+
+#define DPAA2_VENDOR_ID		0x1957
+#define DPAA2_MC_DPNI_DEVID	7
+#define DPAA2_MC_DPSECI_DEVID	3
+
+#define VFIO_MAX_GRP 1
+
+typedef struct fslmc_vfio_device {
+	int fd; /* fslmc root container device ?? */
+	int index; /*index of child object */
+	struct fslmc_vfio_device *child; /* Child object */
+} fslmc_vfio_device;
+
+typedef struct fslmc_vfio_group {
+	int fd; /* /dev/vfio/"groupid" */
+	int groupid;
+	struct fslmc_vfio_container *container;
+	int object_index;
+	struct fslmc_vfio_device *vfio_device;
+} fslmc_vfio_group;
+
+typedef struct fslmc_vfio_container {
+	int fd; /* /dev/vfio/vfio */
+	int used;
+	int index; /* index in group list */
+	struct fslmc_vfio_group *group_list[VFIO_MAX_GRP];
+} fslmc_vfio_container;
+
+int vfio_dmamap_mem_region(
+	uint64_t vaddr,
+	uint64_t iova,
+	uint64_t size);
+
+int fslmc_vfio_setup_group(void);
+int fslmc_vfio_process_group(struct rte_bus *bus);
+
+#endif /* _FSLMC_VFIO_H_ */
-- 
1.9.1