[Qemu-devel] [PATCH RFC v2 2/2] use EC space instead of specific systemio for cpu hotplug

[liguang]

Signed-off-by: liguang <address@hidden>
---
 src/acpi-dsdt-cpu-hotplug.dsl |    9 +++++----
 src/acpi-dsdt-isa.dsl         |    8 +++++---
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/src/acpi-dsdt-cpu-hotplug.dsl b/src/acpi-dsdt-cpu-hotplug.dsl
index 0f3e83b..869373b 100644
--- a/src/acpi-dsdt-cpu-hotplug.dsl
+++ b/src/acpi-dsdt-cpu-hotplug.dsl
@@ -6,6 +6,7 @@ Scope(\_SB) {
     /* Objects filled in by run-time generated SSDT */
     External(NTFY, MethodObj)
     External(CPON, PkgObj)
+    External(PRS, BuffObj)
 
     /* Methods called by run-time generated SSDT Processor objects */
     Method(CPMA, 1, NotSerialized) {
@@ -38,10 +39,10 @@ Scope(\_SB) {
     }
 
     /* CPU hotplug notify method */
-    OperationRegion(PRST, SystemIO, 0xaf00, 32)
-    Field(PRST, ByteAcc, NoLock, Preserve) {
-        PRS, 256
-    }
+//   OperationRegion(PRST, SystemIO, 0xaf00, 32)
+//    Field(PRST, ByteAcc, NoLock, Preserve) {
+//      PRS, 256
+//  }
     Method(PRSC, 0) {
         // Local5 = active cpu bitmap
         Store(PRS, Local5)
diff --git a/src/acpi-dsdt-isa.dsl b/src/acpi-dsdt-isa.dsl
index 2b9c3a0..1db92a1 100644
--- a/src/acpi-dsdt-isa.dsl
+++ b/src/acpi-dsdt-isa.dsl
@@ -103,6 +103,7 @@ Scope(\_SB.PCI0.ISA) {
        Device (EC0) {
                Name(_HID, EISAID ("PNP0C09"))
                Name(_UID, 1)
+               Name(_STR, Unicode ("QEMU-EC"))
 
                Method(_CRS, 0) {
                        Name(BFFR, ResourceTemplate() {
@@ -114,9 +115,10 @@ Scope(\_SB.PCI0.ISA) {
 
                OperationRegion(ECFD, EmbeddedControl, 0, 0xFF)
                Field(ECFD, ByteAcc, Lock, Preserve) {
-                       Offset(1),
-                       CPUS,   8,      // 1, CPU plug/unplug status map
-                       CPUN,   8,      // 2, CPU index
+                       Offset(2),
+                       CCMD,   3,      // 2, CMD for plug/unplug
+                       CPUN,   8,      // 3, CPU changed id index
+                       PRS,    256,    // 4. CPU status map
                }
 
                Name(_GPE, 3)
-- 
1.7.2.5