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| author | Matthew Rosato <mjrosato@linux.ibm.com> | 2020-10-26 11:34:33 -0400 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2020-11-01 12:30:51 -0700 |
| commit | 7486a62845b1e12011dd99973e4739f69d57cd38 (patch) | |
| tree | 871c8f000b5b07a4230647b2bf807b5e5c79d2f8 /include | |
| parent | 3ab7a0b40d4be5ade3b61d4afd1518193b199423 (diff) | |
| download | qemu-7486a62845b1e12011dd99973e4739f69d57cd38.zip qemu-7486a62845b1e12011dd99973e4739f69d57cd38.tar.gz qemu-7486a62845b1e12011dd99973e4739f69d57cd38.tar.bz2 | |
vfio: Find DMA available capability
The underlying host may be limiting the number of outstanding DMA
requests for type 1 IOMMU. Add helper functions to check for the
DMA available capability and retrieve the current number of DMA
mappings allowed.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[aw: vfio_get_info_dma_avail moved inside CONFIG_LINUX]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/vfio/vfio-common.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 24e299d..1d14946 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -214,6 +214,8 @@ int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type, bool vfio_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type); 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); #endif extern const MemoryListener vfio_prereg_listener; |