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authorMatthew Rosato <mjrosato@linux.ibm.com>2020-10-26 11:34:40 -0400
committerAlex Williamson <alex.williamson@redhat.com>2020-11-01 12:30:52 -0700
commit92fe289ace3e559e2d18d0c2e49cdfb4cbd5a59b (patch)
treed442f2b340b85314770c88992f17b4092a6c261f /hw/vfio/common.c
parent9670ee752727945d8ce4f76efc0b68364b832f20 (diff)
vfio: Add routine for finding VFIO_DEVICE_GET_INFO capabilities
Now that VFIO_DEVICE_GET_INFO supports capability chains, add a helper function to find specific capabilities in the chain. Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'hw/vfio/common.c')
-rw-r--r--hw/vfio/common.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 920786a23e..57f55f0447 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -1159,6 +1159,16 @@ vfio_get_iommu_type1_info_cap(struct vfio_iommu_type1_info *info, uint16_t id)
return vfio_get_cap((void *)info, info->cap_offset, id);
}
+struct vfio_info_cap_header *
+vfio_get_device_info_cap(struct vfio_device_info *info, uint16_t id)
+{
+ if (!(info->flags & VFIO_DEVICE_FLAGS_CAPS)) {
+ return NULL;
+ }
+
+ return vfio_get_cap((void *)info, info->cap_offset, id);
+}
+
bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info,
unsigned int *avail)
{