diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2018-06-15 14:57:16 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2018-06-15 15:23:34 +0100 |
| commit | cb1efcf462a2ff72926e0c5267a2e1d95490f347 (patch) | |
| tree | 9d45fea393ff756b3a7c228d93210f7decf472c2 /include/exec | |
| parent | 21f402093c5ee7363f5ba56916cd5c651b424fef (diff) | |
iommu: Add IOMMU index argument to notifier APIs
Add support for multiple IOMMU indexes to the IOMMU notifier APIs.
When initializing a notifier with iommu_notifier_init(), the caller
must pass the IOMMU index that it is interested in. When a change
happens, the IOMMU implementation must pass
memory_region_notify_iommu() the IOMMU index that has changed and
that notifiers must be called for.
IOMMUs which support only a single index don't need to change.
Callers which only really support working with IOMMUs with a single
index can use the result of passing MEMTXATTRS_UNSPECIFIED to
memory_region_iommu_attrs_to_index().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20180604152941.20374-3-peter.maydell@linaro.org
Diffstat (limited to 'include/exec')
| -rw-r--r-- | include/exec/memory.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index fa6e98ee7b..ec75c45296 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -98,18 +98,21 @@ struct IOMMUNotifier { /* Notify for address space range start <= addr <= end */ hwaddr start; hwaddr end; + int iommu_idx; QLIST_ENTRY(IOMMUNotifier) node; }; typedef struct IOMMUNotifier IOMMUNotifier; static inline void iommu_notifier_init(IOMMUNotifier *n, IOMMUNotify fn, IOMMUNotifierFlag flags, - hwaddr start, hwaddr end) + hwaddr start, hwaddr end, + int iommu_idx) { n->notify = fn; n->notifier_flags = flags; n->start = start; n->end = end; + n->iommu_idx = iommu_idx; } /* @@ -1008,11 +1011,13 @@ uint64_t memory_region_iommu_get_min_page_size(IOMMUMemoryRegion *iommu_mr); * should be notified with an UNMAP followed by a MAP. * * @iommu_mr: the memory region that was changed + * @iommu_idx: the IOMMU index for the translation table which has changed * @entry: the new entry in the IOMMU translation table. The entry * replaces all old entries for the same virtual I/O address range. * Deleted entries have .@perm == 0. */ void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr, + int iommu_idx, IOMMUTLBEntry entry); /** |