[09/13] intel_iommu: provide helper function vtd_get_iommu

Commit Message

Peter Xu Feb. 19, 2016, 3:30 a.m. UTC

Moves acpi_get_iommu() under VT-d to make it a public function.

Signed-off-by: Peter Xu <[e-mail]>
---
 hw/i386/acpi-build.c          | 17 ++---------------
 hw/i386/intel_iommu.c         | 13 +++++++++++++
 include/hw/i386/intel_iommu.h |  2 ++
 3 files changed, 17 insertions(+), 15 deletions(-)

Patch

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 1cefe43..3cc7886 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2491,19 +2491,6 @@  build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
     build_header(linker, table_data, (void *)mcfg, sig, len, 1, NULL, NULL);
 }
 
-static IntelIOMMUState *acpi_get_iommu(void)
-{
-    bool ambiguous = false;
-    Object *intel_iommu = NULL;
-
-    intel_iommu = object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE,
-                                 &ambiguous);
-    if (ambiguous)
-        intel_iommu = NULL;
-
-    return (IntelIOMMUState *)intel_iommu;
-}
-
 static void
 build_dmar_q35(GArray *table_data, GArray *linker)
 {
@@ -2512,7 +2499,7 @@  build_dmar_q35(GArray *table_data, GArray *linker)
     AcpiTableDmar *dmar;
     AcpiDmarHardwareUnit *drhd;
     uint8_t dmar_flags = 0;
-    IntelIOMMUState *intel_iommu = acpi_get_iommu();
+    IntelIOMMUState *intel_iommu = vtd_iommu_get();
     AcpiDmarDeviceScope *scope = NULL;
     /* Root complex IOAPIC use one path[0] only */
     uint16_t scope_size = sizeof(*scope) + sizeof(uint16_t);
@@ -2613,7 +2600,7 @@  static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
 
 static bool acpi_has_iommu(void)
 {
-    return !!acpi_get_iommu();
+    return !!vtd_iommu_get();
 }
 
 static bool acpi_has_nvdimm(void)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index f1cb574..a9cbd7d 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -2000,6 +2000,19 @@  VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, PCIBus *bus, int devfn)
     return vtd_dev_as;
 }
 
+IntelIOMMUState *vtd_iommu_get(void)
+{
+    bool ambiguous = false;
+    Object *intel_iommu = NULL;
+
+    intel_iommu = object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE,
+                                 &ambiguous);
+    if (ambiguous)
+        intel_iommu = NULL;
+
+    return (IntelIOMMUState *)intel_iommu;
+}
+
 /* Do the initialization. It will also be called when reset, so pay
  * attention when adding new initialization stuff.
  */
diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h
index 89781b4..bb94fbd 100644
--- a/include/hw/i386/intel_iommu.h
+++ b/include/hw/i386/intel_iommu.h
@@ -197,5 +197,7 @@  struct IntelIOMMUState {
  * create a new one if none exists
  */
 VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, PCIBus *bus, int devfn);
+/* Get default IOMMU object */
+IntelIOMMUState *vtd_iommu_get(void);
 
 #endif