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| author | Le Tan | 2014-08-16 07:55:40 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin | 2014-08-28 23:10:22 +0200 |
| commit | a52a7fdfa7512c9d095f2d5797c3c423dec43dbc (patch) | |
| tree | 3cbf148321f74ed3e8146dffa60111b06f543c22 /include/hw/pci-host | |
| parent | intel-iommu: add DMAR table to ACPI tables (diff) | |
| download | qemu-a52a7fdfa7512c9d095f2d5797c3c423dec43dbc.tar.gz qemu-a52a7fdfa7512c9d095f2d5797c3c423dec43dbc.tar.xz qemu-a52a7fdfa7512c9d095f2d5797c3c423dec43dbc.zip | |
intel-iommu: add Intel IOMMU emulation to q35 and add a machine option "iommu" as a switch
Add Intel IOMMU emulation to q35 chipset and expose it to the guest.
1. Add a machine option. Users can use "-machine iommu=on|off" in the command
line to enable/disable Intel IOMMU. The default is off.
2. Accroding to the machine option, q35 will initialize the Intel IOMMU and
use pci_setup_iommu() to setup q35_host_dma_iommu() as the IOMMU function for
the pci bus.
3. q35_host_dma_iommu() will return different address space according to the
bus_num and devfn of the device.
Signed-off-by: Le Tan <tamlokveer@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/pci-host')
| -rw-r--r-- | include/hw/pci-host/q35.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/hw/pci-host/q35.h b/include/hw/pci-host/q35.h index d9ee97845b..025d6e69af 100644 --- a/include/hw/pci-host/q35.h +++ b/include/hw/pci-host/q35.h @@ -33,6 +33,7 @@ #include "hw/acpi/acpi.h" #include "hw/acpi/ich9.h" #include "hw/pci-host/pam.h" +#include "hw/i386/intel_iommu.h" #define TYPE_Q35_HOST_DEVICE "q35-pcihost" #define Q35_HOST_DEVICE(obj) \ @@ -60,6 +61,7 @@ typedef struct MCHPCIState { uint64_t pci_hole64_size; PcGuestInfo *guest_info; uint32_t short_root_bus; + IntelIOMMUState *iommu; } MCHPCIState; typedef struct Q35PCIHost { |