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| author | Matthew Rosato <mjrosato@linux.ibm.com> | 2020-10-26 11:34:40 -0400 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2020-11-01 12:30:52 -0700 |
| commit | 92fe289ace3e559e2d18d0c2e49cdfb4cbd5a59b (patch) | |
| tree | d442f2b340b85314770c88992f17b4092a6c261f | |
| parent | 9670ee752727945d8ce4f76efc0b68364b832f20 (diff) | |
| download | focaccia-qemu-92fe289ace3e559e2d18d0c2e49cdfb4cbd5a59b.tar.gz focaccia-qemu-92fe289ace3e559e2d18d0c2e49cdfb4cbd5a59b.zip | |
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>
| -rw-r--r-- | hw/vfio/common.c | 10 | ||||
| -rw-r--r-- | include/hw/vfio/vfio-common.h | 2 |
2 files changed, 12 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) { diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 1d14946a9d..baeb4dcff1 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -216,6 +216,8 @@ struct vfio_info_cap_header * vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id); bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info, unsigned int *avail); +struct vfio_info_cap_header * +vfio_get_device_info_cap(struct vfio_device_info *info, uint16_t id); #endif extern const MemoryListener vfio_prereg_listener; |