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intel_iommu: Implement the PCIIOMMUOps callbacks related to invalidations of device-IOTLB

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Signed-off-by: Clement Mathieu--Drif <clement.mathieu--drif@eviden.com>
Message-Id: <20250628180226.133285-8-clement.mathieu--drif@eviden.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
CLEMENT MATHIEU--DRIF 2025-06-28 18:04:07 +00:00 • committed by Michael S. Tsirkin
parent d6f6467b7c
commit 838efe99fd
1 changed files with 35 additions and 0 deletions
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35
hw/i386/intel_iommu.c
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@ -4733,6 +4733,15 @@ static AddressSpace *vtd_host_dma_iommu(PCIBus *bus, void *opaque, int devfn)
return &vtd_as->as;
}
static void vtd_init_iotlb_notifier(PCIBus *bus, void *opaque, int devfn,
IOMMUNotifier *n, IOMMUNotify fn,
void *user_opaque)
{
n->opaque = user_opaque;
iommu_notifier_init(n, fn, IOMMU_NOTIFIER_DEVIOTLB_EVENTS, 0,
HWADDR_MAX, 0);
}
static void vtd_get_iotlb_info(void *opaque, uint8_t *addr_width,
uint32_t *min_page_size)
{
@ -4742,11 +4751,37 @@ static void vtd_get_iotlb_info(void *opaque, uint8_t *addr_width,
*min_page_size = VTD_PAGE_SIZE;
}
static void vtd_register_iotlb_notifier(PCIBus *bus, void *opaque,
int devfn, uint32_t pasid,
IOMMUNotifier *n)
{
IntelIOMMUState *s = opaque;
VTDAddressSpace *vtd_as;
vtd_as = vtd_find_add_as(s, bus, devfn, pasid);
memory_region_register_iommu_notifier(MEMORY_REGION(&vtd_as->iommu), n,
&error_fatal);
}
static void vtd_unregister_iotlb_notifier(PCIBus *bus, void *opaque,
int devfn, uint32_t pasid,
IOMMUNotifier *n)
{
IntelIOMMUState *s = opaque;
VTDAddressSpace *vtd_as;
vtd_as = vtd_find_add_as(s, bus, devfn, pasid);
memory_region_unregister_iommu_notifier(MEMORY_REGION(&vtd_as->iommu), n);
}
static PCIIOMMUOps vtd_iommu_ops = {
.get_address_space = vtd_host_dma_iommu,
.set_iommu_device = vtd_dev_set_iommu_device,
.unset_iommu_device = vtd_dev_unset_iommu_device,
.get_iotlb_info = vtd_get_iotlb_info,
.init_iotlb_notifier = vtd_init_iotlb_notifier,
.register_iotlb_notifier = vtd_register_iotlb_notifier,
.unregister_iotlb_notifier = vtd_unregister_iotlb_notifier,
};
static bool vtd_decide_config(IntelIOMMUState *s, Error **errp)