On 2/19/25 9:22 AM, Zhenzhong Duan wrote:
> Introduce a new structure VTDHostIOMMUDevice which replaces
> HostIOMMUDevice to be stored in hash table.
>
> It includes a reference to HostIOMMUDevice and IntelIOMMUState,
> also includes BDF information which will be used in future
> patches.
>
> Signed-off-by: Zhenzhong Duan <zhenzhong.d...@intel.com>
> ---
> hw/i386/intel_iommu_internal.h | 7 +++++++
> include/hw/i386/intel_iommu.h | 2 +-
> hw/i386/intel_iommu.c | 14 ++++++++++++--
> 3 files changed, 20 insertions(+), 3 deletions(-)
>
> diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
> index 2cda744786..18bc22fc72 100644
> --- a/hw/i386/intel_iommu_internal.h
> +++ b/hw/i386/intel_iommu_internal.h
> @@ -28,6 +28,7 @@
> #ifndef HW_I386_INTEL_IOMMU_INTERNAL_H
> #define HW_I386_INTEL_IOMMU_INTERNAL_H
> #include "hw/i386/intel_iommu.h"
> +#include "system/host_iommu_device.h"
>
> /*
> * Intel IOMMU register specification
> @@ -608,4 +609,10 @@ typedef struct VTDRootEntry VTDRootEntry;
> /* Bits to decide the offset for each level */
> #define VTD_LEVEL_BITS 9
>
> +typedef struct VTDHostIOMMUDevice {
> + IntelIOMMUState *iommu_state;
> + PCIBus *bus;
> + uint8_t devfn;
Just to make sure the parent
HostIOMMUDevice has aliased_bus and aliased_devfn. Can you explain why do you
need both aliased and non aliased info?
Thanks
Eric
> + HostIOMMUDevice *hiod;
> +} VTDHostIOMMUDevice;
> #endif
> diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h
> index e95477e855..50f9b27a45 100644
> --- a/include/hw/i386/intel_iommu.h
> +++ b/include/hw/i386/intel_iommu.h
> @@ -295,7 +295,7 @@ struct IntelIOMMUState {
> /* list of registered notifiers */
> QLIST_HEAD(, VTDAddressSpace) vtd_as_with_notifiers;
>
> - GHashTable *vtd_host_iommu_dev; /* HostIOMMUDevice */
> + GHashTable *vtd_host_iommu_dev; /* VTDHostIOMMUDevice */
>
> /* interrupt remapping */
> bool intr_enabled; /* Whether guest enabled IR */
> diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
> index 9de60e607d..fafa199f52 100644
> --- a/hw/i386/intel_iommu.c
> +++ b/hw/i386/intel_iommu.c
> @@ -281,7 +281,10 @@ static gboolean vtd_hiod_equal(gconstpointer v1,
> gconstpointer v2)
>
> static void vtd_hiod_destroy(gpointer v)
> {
> - object_unref(v);
> + VTDHostIOMMUDevice *vtd_hiod = v;
> +
> + object_unref(vtd_hiod->hiod);
> + g_free(vtd_hiod);
> }
>
> static gboolean vtd_hash_remove_by_domain(gpointer key, gpointer value,
> @@ -4388,6 +4391,7 @@ static bool vtd_dev_set_iommu_device(PCIBus *bus, void
> *opaque, int devfn,
> HostIOMMUDevice *hiod, Error **errp)
> {
> IntelIOMMUState *s = opaque;
> + VTDHostIOMMUDevice *vtd_hiod;
> struct vtd_as_key key = {
> .bus = bus,
> .devfn = devfn,
> @@ -4404,6 +4408,12 @@ static bool vtd_dev_set_iommu_device(PCIBus *bus, void
> *opaque, int devfn,
> return false;
> }
>
> + vtd_hiod = g_malloc0(sizeof(VTDHostIOMMUDevice));
> + vtd_hiod->bus = bus;
> + vtd_hiod->devfn = (uint8_t)devfn;
> + vtd_hiod->iommu_state = s;
> + vtd_hiod->hiod = hiod;
> +
> if (!vtd_check_hiod(s, hiod, errp)) {
> vtd_iommu_unlock(s);
> return false;
> @@ -4414,7 +4424,7 @@ static bool vtd_dev_set_iommu_device(PCIBus *bus, void
> *opaque, int devfn,
> new_key->devfn = devfn;
>
> object_ref(hiod);
> - g_hash_table_insert(s->vtd_host_iommu_dev, new_key, hiod);
> + g_hash_table_insert(s->vtd_host_iommu_dev, new_key, vtd_hiod);
>
> vtd_iommu_unlock(s);
>
