[Xen-devel] [PATCH v5 12/24] hw: acpi: Export the MCFG getter

[Samuel Ortiz <sameo@xxxxxxxxxxxxxxx>]

From: Yang Zhong <yang.zhong@xxxxxxxxx>

The ACPI MCFG getter is not x86 specific and could be called from
anywhere within generic ACPI API, so let's export it.

Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
Tested-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
Signed-off-by: Yang Zhong <yang.zhong@xxxxxxxxx>
---
 include/hw/acpi/aml-build.h |  1 +
 hw/acpi/aml-build.c         | 24 ++++++++++++++++++++++++
 hw/i386/acpi-build.c        | 22 ----------------------
 3 files changed, 25 insertions(+), 22 deletions(-)

diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 1861e37ebf..64ea371656 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -408,6 +408,7 @@ void *acpi_data_push(GArray *table_data, unsigned size);
 unsigned acpi_data_len(GArray *table);
 Object *acpi_get_pci_host(void);
 void acpi_get_pci_holes(Range *hole, Range *hole64);
+bool acpi_get_mcfg(AcpiMcfgInfo *mcfg);
 /* Align AML blob size to a multiple of 'align' */
 void acpi_align_size(GArray *blob, unsigned align);
 void acpi_add_table(GArray *table_offsets, GArray *table_data);
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 869ed70db3..2c5446ab23 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -32,6 +32,8 @@
 #include "hw/i386/pc.h"
 #include "sysemu/tpm.h"
 #include "hw/acpi/tpm.h"
+#include "qom/qom-qobject.h"
+#include "qapi/qmp/qnum.h"
 
 #define PCI_HOST_BRIDGE_CONFIG_ADDR        0xcf8
 #define PCI_HOST_BRIDGE_IO_0_MIN_ADDR      0x0000
@@ -1657,6 +1659,28 @@ void acpi_get_pci_holes(Range *hole, Range *hole64)
                                                NULL));
 }
 
+bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
+{
+    Object *pci_host;
+    QObject *o;
+
+    pci_host = acpi_get_pci_host();
+    g_assert(pci_host);
+
+    o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL);
+    if (!o) {
+        return false;
+    }
+    mcfg->mcfg_base = qnum_get_uint(qobject_to(QNum, o));
+    qobject_unref(o);
+
+    o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL);
+    assert(o);
+    mcfg->mcfg_size = qnum_get_uint(qobject_to(QNum, o));
+    qobject_unref(o);
+    return true;
+}
+
 static void crs_range_insert(GPtrArray *ranges, uint64_t base, uint64_t limit)
 {
     CrsRangeEntry *entry;
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 14e2624d14..d8bba16776 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1856,28 +1856,6 @@ build_amd_iommu(GArray *table_data, BIOSLinker *linker)
                  "IVRS", table_data->len - iommu_start, 1, NULL, NULL);
 }
 
-static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
-{
-    Object *pci_host;
-    QObject *o;
-
-    pci_host = acpi_get_pci_host();
-    g_assert(pci_host);
-
-    o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL);
-    if (!o) {
-        return false;
-    }
-    mcfg->mcfg_base = qnum_get_uint(qobject_to(QNum, o));
-    qobject_unref(o);
-
-    o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL);
-    assert(o);
-    mcfg->mcfg_size = qnum_get_uint(qobject_to(QNum, o));
-    qobject_unref(o);
-    return true;
-}
-
 static
 void acpi_build(AcpiBuildTables *tables,
                 MachineState *machine, AcpiConfiguration *acpi_conf)
-- 
2.19.1


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