motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 15:53:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

iommu: Add IOMMU index concept to IOMMU API

Browse source 
If an IOMMU supports mappings that care about the memory
transaction attributes, then it no longer has a unique
address -> output mapping, but more than one. We can
represent these using an IOMMU index, analogous to TCG's
mmu indexes.

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: 20180604152941.20374-2-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2018-06-15 14:57:15 +01:00
parent 2151b044fd
commit 21f402093c
2 changed files with 78 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

23
memory.c
View file

@ -1915,6 +1915,29 @@ int memory_region_iommu_get_attr(IOMMUMemoryRegion *iommu_mr,
return imrc->get_attr(iommu_mr, attr, data);
}
int memory_region_iommu_attrs_to_index(IOMMUMemoryRegion *iommu_mr,
MemTxAttrs attrs)
{
IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
if (!imrc->attrs_to_index) {
return 0;
}
return imrc->attrs_to_index(iommu_mr, attrs);
}
int memory_region_iommu_num_indexes(IOMMUMemoryRegion *iommu_mr)
{
IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
if (!imrc->num_indexes) {
return 1;
}
return imrc->num_indexes(iommu_mr);
}
void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
{
uint8_t mask = 1 << client;