lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

iommu: Add domain_has_cap iommu_ops

Browse Source 
This iommu_op can tell if domain have a specific capability, like snooping
control for Intel IOMMU, which can be used by other components of kernel to
adjust the behaviour.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Sheng Yang
2009-03-18 15:33:06 +08:00
committed by David Woodhouse
parent 58c610bd1a
commit dbb9fd8630
4 changed files with 38 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
arch/x86/kernel/amd_iommu.c
View File

@ -1924,6 +1924,12 @@ static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom,
return paddr;
}
static int amd_iommu_domain_has_cap(struct iommu_domain *domain,
unsigned long cap)
{
return 0;
}
static struct iommu_ops amd_iommu_ops = {
.domain_init = amd_iommu_domain_init,
.domain_destroy = amd_iommu_domain_destroy,
@ -1932,5 +1938,6 @@ static struct iommu_ops amd_iommu_ops = {
.map = amd_iommu_map_range,
.unmap = amd_iommu_unmap_range,
.iova_to_phys = amd_iommu_iova_to_phys,
.domain_has_cap = amd_iommu_domain_has_cap,
};