[PATCH v3 16/20] bus/fslmc: use the new VFIO mode API

[Anatoly Burakov <anatoly.burakov@intel.com>]

FSLMC bus only supports operating in group mode, and relies on no-IOMMU
mode checks. Use the new VFIO API's to query no-IOMMU status, as well as
protect the bus from initializing in non-group mode.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
 drivers/bus/fslmc/fslmc_bus.c  | 10 +++++++++-
 drivers/bus/fslmc/fslmc_vfio.c |  2 +-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
index 4529ec5085..82b53bcc54 100644
--- a/drivers/bus/fslmc/fslmc_bus.c
+++ b/drivers/bus/fslmc/fslmc_bus.c
@@ -335,6 +335,13 @@ rte_fslmc_scan(void)
 		goto scan_fail;
 	}
 
+	/* for container groups to work, VFIO must be in group mode */
+	if (rte_vfio_get_mode() != RTE_VFIO_MODE_GROUP &&
+			rte_vfio_get_mode() != RTE_VFIO_MODE_NOIOMMU) {
+		ret = -EINVAL;
+		goto scan_fail;
+	}
+
 	ret = fslmc_get_container_group(group_name, &groupid);
 	if (ret != 0)
 		goto scan_fail;
@@ -582,7 +589,8 @@ rte_dpaa2_get_iommu_class(void)
 		return RTE_IOVA_DC;
 
 	/* check if all devices on the bus support Virtual addressing or not */
-	if (fslmc_all_device_support_iova() != 0 && rte_vfio_noiommu_is_enabled() == 0)
+	if (fslmc_all_device_support_iova() != 0 &&
+			rte_vfio_get_mode() != RTE_VFIO_MODE_NOIOMMU)
 		return RTE_IOVA_VA;
 
 	return RTE_IOVA_PA;
diff --git a/drivers/bus/fslmc/fslmc_vfio.c b/drivers/bus/fslmc/fslmc_vfio.c
index 4b11b38322..afde967e34 100644
--- a/drivers/bus/fslmc/fslmc_vfio.c
+++ b/drivers/bus/fslmc/fslmc_vfio.c
@@ -192,7 +192,7 @@ fslmc_vfio_add_group(int vfio_group_fd,
 	group->fd = vfio_group_fd;
 	group->groupid = iommu_group_num;
 	rte_strscpy(group->group_name, group_name, sizeof(group->group_name));
-	if (rte_vfio_noiommu_is_enabled() > 0)
+	if (rte_vfio_get_mode() == RTE_VFIO_MODE_NOIOMMU)
 		group->iommu_type = VFIO_NOIOMMU_IOMMU;
 	else
 		group->iommu_type = VFIO_TYPE1_IOMMU;
-- 
2.47.3