1 files changed, 51 insertions, 0 deletions
diff --git a/hw/i386/ssdt-pcihp.dsl b/hw/i386/ssdt-pcihp.dsl
new file mode 100644
index 0000000000..d29a5b95d2
--- /dev/null
+++ b/hw/i386/ssdt-pcihp.dsl
@@ -0,0 +1,51 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+ACPI_EXTRACT_ALL_CODE ssdp_pcihp_aml
+
+DefinitionBlock ("ssdt-pcihp.aml", "SSDT", 0x01, "BXPC", "BXSSDTPCIHP", 0x1)
+{
+
+/****************************************************************
+ * PCI hotplug
+ ****************************************************************/
+
+    /* Objects supplied by DSDT */
+    External(\_SB.PCI0, DeviceObj)
+    External(\_SB.PCI0.PCEJ, MethodObj)
+
+    Scope(\_SB.PCI0) {
+
+        /* Bulk generated PCI hotplug devices */
+        ACPI_EXTRACT_DEVICE_START ssdt_pcihp_start
+        ACPI_EXTRACT_DEVICE_END ssdt_pcihp_end
+        ACPI_EXTRACT_DEVICE_STRING ssdt_pcihp_name
+
+        // Method _EJ0 can be patched by BIOS to EJ0_
+        // at runtime, if the slot is detected to not support hotplug.
+        // Extract the offset of the address dword and the
+        // _EJ0 name to allow this patching.
+        Device(SAA) {
+            ACPI_EXTRACT_NAME_BYTE_CONST ssdt_pcihp_id
+            Name(_SUN, 0xAA)
+            ACPI_EXTRACT_NAME_DWORD_CONST ssdt_pcihp_adr
+            Name(_ADR, 0xAA0000)
+            ACPI_EXTRACT_METHOD_STRING ssdt_pcihp_ej0
+            Method(_EJ0, 1) {
+                Return (PCEJ(_SUN))
+            }
+        }
+    }
+}