diff options
Diffstat (limited to 'hw/i386/acpi-dsdt-mem-hotplug.dsl')
| -rw-r--r-- | hw/i386/acpi-dsdt-mem-hotplug.dsl | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/hw/i386/acpi-dsdt-mem-hotplug.dsl b/hw/i386/acpi-dsdt-mem-hotplug.dsl new file mode 100644 index 0000000000..2a36c4799e --- /dev/null +++ b/hw/i386/acpi-dsdt-mem-hotplug.dsl @@ -0,0 +1,176 @@ +/* + * 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/>. + */ + + External(MEMORY_SLOT_NOTIFY_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 */ + OperationRegion(MEMORY_HOTPLUG_IO_REGION, SystemIO, + ACPI_MEMORY_HOTPLUG_BASE, + ACPI_MEMORY_HOTPLUG_IO_LEN) + + Name(_CRS, ResourceTemplate() { + IO(Decode16, ACPI_MEMORY_HOTPLUG_BASE, ACPI_MEMORY_HOTPLUG_BASE, + 0, ACPI_MEMORY_HOTPLUG_IO_LEN, IO) + }) + + Method(_STA, 0) { + If (LEqual(MEMORY_SLOTS_NUMBER, Zero)) { + Return(0x0) + } + /* present, functioning, decoding, not shown in UI */ + Return(0xB) + } + + Field(MEMORY_HOTPLUG_IO_REGION, DWordAcc, NoLock, Preserve) { + MEMORY_SLOT_ADDR_LOW, 32, // read only + MEMORY_SLOT_ADDR_HIGH, 32, // read only + MEMORY_SLOT_SIZE_LOW, 32, // read only + MEMORY_SLOT_SIZE_HIGH, 32, // read only + MEMORY_SLOT_PROXIMITY, 32, // read only + } + Field(MEMORY_HOTPLUG_IO_REGION, ByteAcc, NoLock, Preserve) { + Offset(20), + MEMORY_SLOT_ENABLED, 1, // 1 if enabled, read only + MEMORY_SLOT_INSERT_EVENT, 1, // (read) 1 if has a insert event. (write) 1 to clear event + } + + Mutex (MEMORY_SLOT_LOCK, 0) + Field (MEMORY_HOTPLUG_IO_REGION, DWordAcc, NoLock, Preserve) { + MEMORY_SLOT_SLECTOR, 32, // DIMM selector, write only + MEMORY_SLOT_OST_EVENT, 32, // _OST event code, write only + MEMORY_SLOT_OST_STATUS, 32, // _OST status code, write only + } + + 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) + } + // TODO: handle memory eject request + Add(Local0, One, Local0) // goto next DIMM + } + Release(MEMORY_SLOT_LOCK) + Return(One) + } + + Method(MEMORY_SLOT_STATUS_METHOD, 1) { + Store(Zero, Local0) + + Acquire(MEMORY_SLOT_LOCK, 0xFFFF) + Store(ToInteger(Arg0), MEMORY_SLOT_SLECTOR) // select DIMM + + If (LEqual(MEMORY_SLOT_ENABLED, One)) { + Store(0xF, Local0) + } + + Release(MEMORY_SLOT_LOCK) + Return(Local0) + } + + Method(MEMORY_SLOT_CRS_METHOD, 1, Serialized) { + Acquire(MEMORY_SLOT_LOCK, 0xFFFF) + Store(ToInteger(Arg0), MEMORY_SLOT_SLECTOR) // select DIMM + + Name(MR64, ResourceTemplate() { + QWordMemory(ResourceProducer, PosDecode, MinFixed, MaxFixed, + Cacheable, ReadWrite, + 0x0000000000000000, // Address Space Granularity + 0x0000000000000000, // Address Range Minimum + 0xFFFFFFFFFFFFFFFE, // Address Range Maximum + 0x0000000000000000, // Address Translation Offset + 0xFFFFFFFFFFFFFFFF, // Address Length + ,, MW64, AddressRangeMemory, TypeStatic) + }) + + CreateDWordField(MR64, 14, MINL) + CreateDWordField(MR64, 18, MINH) + CreateDWordField(MR64, 38, LENL) + CreateDWordField(MR64, 42, LENH) + CreateDWordField(MR64, 22, MAXL) + CreateDWordField(MR64, 26, MAXH) + + Store(MEMORY_SLOT_ADDR_HIGH, MINH) + Store(MEMORY_SLOT_ADDR_LOW, MINL) + Store(MEMORY_SLOT_SIZE_HIGH, LENH) + Store(MEMORY_SLOT_SIZE_LOW, LENL) + + // 64-bit math: MAX = MIN + LEN - 1 + Add(MINL, LENL, MAXL) + Add(MINH, LENH, MAXH) + If (LLess(MAXL, MINL)) { + Add(MAXH, One, MAXH) + } + If (LLess(MAXL, One)) { + Subtract(MAXH, One, MAXH) + } + Subtract(MAXL, One, MAXL) + + If (LEqual(MAXH, Zero)){ + Name(MR32, ResourceTemplate() { + DWordMemory(ResourceProducer, PosDecode, MinFixed, MaxFixed, + Cacheable, ReadWrite, + 0x00000000, // Address Space Granularity + 0x00000000, // Address Range Minimum + 0xFFFFFFFE, // Address Range Maximum + 0x00000000, // Address Translation Offset + 0xFFFFFFFF, // Address Length + ,, MW32, AddressRangeMemory, TypeStatic) + }) + CreateDWordField(MR32, MW32._MIN, MIN) + CreateDWordField(MR32, MW32._MAX, MAX) + CreateDWordField(MR32, MW32._LEN, LEN) + Store(MINL, MIN) + Store(MAXL, MAX) + Store(LENL, LEN) + + Release(MEMORY_SLOT_LOCK) + Return(MR32) + } + + Release(MEMORY_SLOT_LOCK) + Return(MR64) + } + + Method(MEMORY_SLOT_PROXIMITY_METHOD, 1) { + Acquire(MEMORY_SLOT_LOCK, 0xFFFF) + Store(ToInteger(Arg0), MEMORY_SLOT_SLECTOR) // select DIMM + Store(MEMORY_SLOT_PROXIMITY, Local0) + Release(MEMORY_SLOT_LOCK) + Return(Local0) + } + + Method(MEMORY_SLOT_OST_METHOD, 4) { + Acquire(MEMORY_SLOT_LOCK, 0xFFFF) + Store(ToInteger(Arg0), MEMORY_SLOT_SLECTOR) // select DIMM + Store(Arg1, MEMORY_SLOT_OST_EVENT) + Store(Arg2, MEMORY_SLOT_OST_STATUS) + Release(MEMORY_SLOT_LOCK) + } + } // Device() + } // Scope() |