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pc: acpi: memhp: move MHPD.MSCN method into SSDT 

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2015-12-28 18:02:12 +01:00 committed by Michael S. Tsirkin
parent 12fdadb574
commit e8f9db491d
2 changed files with 61 additions and 26 deletions
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60
hw/acpi/memory_hotplug_acpi_table.c
View File

@ -26,8 +26,11 @@ void build_memory_hotplug_aml(Aml *ctx, uint32_t nr_mem,
pci_scope = aml_scope("_SB.PCI0");
mem_ctrl_dev = aml_scope(stringify(MEMORY_HOTPLUG_DEVICE));
{
Aml *one = aml_int(1);
Aml *zero = aml_int(0);
Aml *slots_nr = aml_name(stringify(MEMORY_SLOTS_NUMBER));
Aml *ctrl_lock = aml_name(stringify(MEMORY_SLOT_LOCK));
Aml *slot_selector = aml_name(stringify(MEMORY_SLOT_SLECTOR));
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
ifctx = aml_if(aml_equal(slots_nr, zero));
@ -40,6 +43,63 @@ void build_memory_hotplug_aml(Aml *ctx, uint32_t nr_mem,
aml_append(mem_ctrl_dev, method);
aml_append(mem_ctrl_dev, aml_mutex(stringify(MEMORY_SLOT_LOCK), 0));
method = aml_method(stringify(MEMORY_SLOT_SCAN_METHOD), 0,
AML_NOTSERIALIZED);
{
Aml *else_ctx;
Aml *while_ctx;
Aml *idx = aml_local(0);
Aml *eject_req = aml_int(3);
Aml *dev_chk = aml_int(1);
ifctx = aml_if(aml_equal(slots_nr, zero));
{
aml_append(ifctx, aml_return(zero));
}
aml_append(method, ifctx);
aml_append(method, aml_store(zero, idx));
aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
/* build AML that:
* loops over all slots and Notifies DIMMs with
* Device Check or Eject Request notifications if
* slot has corresponding status bit set and clears
* slot status.
*/
while_ctx = aml_while(aml_lless(idx, slots_nr));
{
Aml *ins_evt = aml_name(stringify(MEMORY_SLOT_INSERT_EVENT));
Aml *rm_evt = aml_name(stringify(MEMORY_SLOT_REMOVE_EVENT));
aml_append(while_ctx, aml_store(idx, slot_selector));
ifctx = aml_if(aml_equal(ins_evt, one));
{
aml_append(ifctx,
aml_call2(stringify(MEMORY_SLOT_NOTIFY_METHOD),
idx, dev_chk));
aml_append(ifctx, aml_store(one, ins_evt));
}
aml_append(while_ctx, ifctx);
else_ctx = aml_else();
ifctx = aml_if(aml_equal(rm_evt, one));
{
aml_append(ifctx,
aml_call2(stringify(MEMORY_SLOT_NOTIFY_METHOD),
idx, eject_req));
aml_append(ifctx, aml_store(one, rm_evt));
}
aml_append(else_ctx, ifctx);
aml_append(while_ctx, else_ctx);
aml_append(while_ctx, aml_add(idx, one, idx));
}
aml_append(method, while_ctx);
aml_append(method, aml_release(ctrl_lock));
aml_append(method, aml_return(one));
}
aml_append(mem_ctrl_dev, method);
}
aml_append(pci_scope, mem_ctrl_dev);
aml_append(ctx, pci_scope);

27
hw/i386/acpi-dsdt-mem-hotplug.dsl
View File

@ -13,13 +13,12 @@
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
External(MEMORY_SLOT_NOTIFY_METHOD, MethodObj)
External(\_SB.PCI0.MEMORY_HOTPLUG_DEVICE.MEMORY_SLOT_SCAN_METHOD, MethodObj)
Scope(\_SB.PCI0) {
Device(MEMORY_HOTPLUG_DEVICE) {
Name(_HID, "PNP0A06")
Name(_UID, "Memory hotplug resources")
External(MEMORY_SLOTS_NUMBER, IntObj)
/* Memory hotplug IO registers */
External(MEMORY_SLOT_ADDR_LOW, FieldUnitObj) // read only
@ -28,36 +27,12 @@
External(MEMORY_SLOT_SIZE_HIGH, FieldUnitObj) // read only
External(MEMORY_SLOT_PROXIMITY, FieldUnitObj) // read only
External(MEMORY_SLOT_ENABLED, FieldUnitObj) // 1 if enabled, read only
External(MEMORY_SLOT_INSERT_EVENT, FieldUnitObj) // (read) 1 if has a insert event. (write) 1 to clear event
External(MEMORY_SLOT_REMOVE_EVENT, FieldUnitObj) // (read) 1 if has a remove event. (write) 1 to clear event
External(MEMORY_SLOT_EJECT, FieldUnitObj) // initiates device eject, write only
External(MEMORY_SLOT_SLECTOR, FieldUnitObj) // DIMM selector, write only
External(MEMORY_SLOT_OST_EVENT, FieldUnitObj) // _OST event code, write only
External(MEMORY_SLOT_OST_STATUS, FieldUnitObj) // _OST status code, write only
External(MEMORY_SLOT_LOCK, MutexObj)
Method(MEMORY_SLOT_SCAN_METHOD, 0) {
If (LEqual(MEMORY_SLOTS_NUMBER, Zero)) {
Return(Zero)
}
Store(Zero, Local0) // Mem devs iterrator
Acquire(MEMORY_SLOT_LOCK, 0xFFFF)
while (LLess(Local0, MEMORY_SLOTS_NUMBER)) {
Store(Local0, MEMORY_SLOT_SLECTOR) // select Local0 DIMM
If (LEqual(MEMORY_SLOT_INSERT_EVENT, One)) { // Memory device needs check
MEMORY_SLOT_NOTIFY_METHOD(Local0, 1)
Store(1, MEMORY_SLOT_INSERT_EVENT)
} Elseif (LEqual(MEMORY_SLOT_REMOVE_EVENT, One)) { // Ejection request
MEMORY_SLOT_NOTIFY_METHOD(Local0, 3)
Store(1, MEMORY_SLOT_REMOVE_EVENT)
}
Add(Local0, One, Local0) // goto next DIMM
}
Release(MEMORY_SLOT_LOCK)
Return(One)
}
Method(MEMORY_SLOT_STATUS_METHOD, 1) {
Store(Zero, Local0)