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iommu: Introduce new 'struct iommu_device'

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This struct represents one hardware iommu in the iommu core
code. For now it only has the iommu-ops associated with it,
but that will be extended soon.

The register/unregister interface is also added, as well as
making use of it in the Intel and AMD IOMMU drivers.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel
2017-02-01 13:23:08 +01:00
parent c09e22d537
commit b0119e8708
8 changed files with 77 additions and 4 deletions
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9
drivers/iommu/dmar.c
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@@ -74,6 +74,8 @@ static unsigned long dmar_seq_ids[BITS_TO_LONGS(DMAR_UNITS_SUPPORTED)];
static int alloc_iommu(struct dmar_drhd_unit *drhd);
static void free_iommu(struct intel_iommu *iommu);
extern const struct iommu_ops intel_iommu_ops;
static void dmar_register_drhd_unit(struct dmar_drhd_unit *drhd)
{
/*
@@ -1084,6 +1086,12 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd)
err = PTR_ERR(iommu->iommu_dev);
goto err_unmap;
}
iommu_device_set_ops(&iommu->iommu, &intel_iommu_ops);
err = iommu_device_register(&iommu->iommu);
if (err)
goto err_unmap;
}
drhd->iommu = iommu;
@@ -1102,6 +1110,7 @@ error:
static void free_iommu(struct intel_iommu *iommu)
{
iommu_device_destroy(iommu->iommu_dev);
iommu_device_unregister(&iommu->iommu);
if (iommu->irq) {
if (iommu->pr_irq) {