[Qemu-devel] [PATCH] hw/arm/acpi: enable SHPC native hot plug

[Heyi Guo <guoheyi@huawei.com>]

After the introduction of generic PCIe root port and PCIe-PCI bridge,
we will also have SHPC controller on ARM, so just enalbe SHPC native
hot plug.

Cc: Shannon Zhao <shannon.zhaosl@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Heyi Guo <guoheyi@huawei.com>
Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
---
 hw/arm/virt-acpi-build.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 04b62c7..7849ec5 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -265,7 +265,12 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
         aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
     aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP")));
     aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL")));
-    aml_append(ifctx, aml_store(aml_and(aml_name("CTRL"), aml_int(0x1D), NULL),
+
+    /*
+     * Allow OS control for all 5 features:
+     * PCIeHotplug SHPCHotplug PME AER PCIeCapability.
+     */
+    aml_append(ifctx, aml_store(aml_and(aml_name("CTRL"), aml_int(0x1F), NULL),
                                 aml_name("CTRL")));
 
     ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
-- 
1.8.3.1