bef3492d11
- provides static SSDT object for memory hotplug that can handle upto 256 hotplugable memory slots - SSDT template for memory devices and runtime generator of them in SSDT table. Signed-off-by: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com> Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
284 lines
10 KiB
Plaintext
284 lines
10 KiB
Plaintext
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hw/acpi/pc-hotplug.h"
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ACPI_EXTRACT_ALL_CODE ssdp_misc_aml
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DefinitionBlock ("ssdt-misc.aml", "SSDT", 0x01, "BXPC", "BXSSDTSUSP", 0x1)
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{
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/****************************************************************
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* PCI memory ranges
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****************************************************************/
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Scope(\) {
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ACPI_EXTRACT_NAME_DWORD_CONST acpi_pci32_start
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Name(P0S, 0x12345678)
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ACPI_EXTRACT_NAME_DWORD_CONST acpi_pci32_end
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Name(P0E, 0x12345678)
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ACPI_EXTRACT_NAME_BYTE_CONST acpi_pci64_valid
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Name(P1V, 0x12)
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ACPI_EXTRACT_NAME_BUFFER8 acpi_pci64_start
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Name(P1S, Buffer() { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 })
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ACPI_EXTRACT_NAME_BUFFER8 acpi_pci64_end
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Name(P1E, Buffer() { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 })
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ACPI_EXTRACT_NAME_BUFFER8 acpi_pci64_length
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Name(P1L, Buffer() { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 })
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}
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/****************************************************************
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* Suspend
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****************************************************************/
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Scope(\) {
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/*
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* S3 (suspend-to-ram), S4 (suspend-to-disk) and S5 (power-off) type codes:
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* must match piix4 emulation.
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*/
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ACPI_EXTRACT_NAME_STRING acpi_s3_name
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Name(_S3, Package(0x04) {
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One, /* PM1a_CNT.SLP_TYP */
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One, /* PM1b_CNT.SLP_TYP */
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Zero, /* reserved */
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Zero /* reserved */
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})
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ACPI_EXTRACT_NAME_STRING acpi_s4_name
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ACPI_EXTRACT_PKG_START acpi_s4_pkg
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Name(_S4, Package(0x04) {
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0x2, /* PM1a_CNT.SLP_TYP */
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0x2, /* PM1b_CNT.SLP_TYP */
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Zero, /* reserved */
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Zero /* reserved */
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})
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Name(_S5, Package(0x04) {
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Zero, /* PM1a_CNT.SLP_TYP */
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Zero, /* PM1b_CNT.SLP_TYP */
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Zero, /* reserved */
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Zero /* reserved */
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})
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}
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External(\_SB.PCI0, DeviceObj)
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External(\_SB.PCI0.ISA, DeviceObj)
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Scope(\_SB.PCI0.ISA) {
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Device(PEVT) {
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Name(_HID, "QEMU0001")
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/* PEST will be patched to be Zero if no such device */
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ACPI_EXTRACT_NAME_WORD_CONST ssdt_isa_pest
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Name(PEST, 0xFFFF)
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OperationRegion(PEOR, SystemIO, PEST, 0x01)
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Field(PEOR, ByteAcc, NoLock, Preserve) {
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PEPT, 8,
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}
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Method(_STA, 0, NotSerialized) {
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Store(PEST, Local0)
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If (LEqual(Local0, Zero)) {
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Return (0x00)
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} Else {
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Return (0x0F)
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}
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}
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Method(RDPT, 0, NotSerialized) {
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Store(PEPT, Local0)
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Return (Local0)
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}
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Method(WRPT, 1, NotSerialized) {
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Store(Arg0, PEPT)
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}
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Name(_CRS, ResourceTemplate() {
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IO(Decode16, 0x00, 0x00, 0x01, 0x01, IO)
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})
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CreateWordField(_CRS, IO._MIN, IOMN)
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CreateWordField(_CRS, IO._MAX, IOMX)
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Method(_INI, 0, NotSerialized) {
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Store(PEST, IOMN)
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Store(PEST, IOMX)
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}
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}
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}
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External(MEMORY_SLOT_NOTIFY_METHOD, MethodObj)
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Scope(\_SB.PCI0) {
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Device(MEMORY_HOPTLUG_DEVICE) {
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Name(_HID, "PNP0A06")
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Name(_UID, "Memory hotplug resources")
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ACPI_EXTRACT_NAME_DWORD_CONST ssdt_mctrl_nr_slots
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Name(MEMORY_SLOTS_NUMBER, 0x12345678)
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/* Memory hotplug IO registers */
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OperationRegion(MEMORY_HOTPLUG_IO_REGION, SystemIO,
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ACPI_MEMORY_HOTPLUG_BASE,
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ACPI_MEMORY_HOTPLUG_IO_LEN)
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Name(_CRS, ResourceTemplate() {
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IO(Decode16, ACPI_MEMORY_HOTPLUG_BASE, ACPI_MEMORY_HOTPLUG_BASE,
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0, ACPI_MEMORY_HOTPLUG_IO_LEN, IO)
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})
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Method(_STA, 0) {
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If (LEqual(MEMORY_SLOTS_NUMBER, Zero)) {
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Return(0x0)
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}
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/* present, functioning, decoding, not shown in UI */
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Return(0xB)
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}
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Field(MEMORY_HOTPLUG_IO_REGION, DWordAcc, NoLock, Preserve) {
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MEMORY_SLOT_ADDR_LOW, 32, // read only
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MEMORY_SLOT_ADDR_HIGH, 32, // read only
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MEMORY_SLOT_SIZE_LOW, 32, // read only
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MEMORY_SLOT_SIZE_HIGH, 32, // read only
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MEMORY_SLOT_PROXIMITY, 32, // read only
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}
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Field(MEMORY_HOTPLUG_IO_REGION, ByteAcc, NoLock, Preserve) {
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Offset(20),
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MEMORY_SLOT_ENABLED, 1, // 1 if enabled, read only
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MEMORY_SLOT_INSERT_EVENT, 1, // (read) 1 if has a insert event. (write) 1 to clear event
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}
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Mutex (MEMORY_SLOT_LOCK, 0)
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Field (MEMORY_HOTPLUG_IO_REGION, DWordAcc, NoLock, Preserve) {
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MEMORY_SLOT_SLECTOR, 32, // DIMM selector, write only
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MEMORY_SLOT_OST_EVENT, 32, // _OST event code, write only
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MEMORY_SLOT_OST_STATUS, 32, // _OST status code, write only
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}
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Method(MEMORY_SLOT_SCAN_METHOD, 0) {
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If (LEqual(MEMORY_SLOTS_NUMBER, Zero)) {
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Return(Zero)
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}
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Store(Zero, Local0) // Mem devs iterrator
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Acquire(MEMORY_SLOT_LOCK, 0xFFFF)
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while (LLess(Local0, MEMORY_SLOTS_NUMBER)) {
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Store(Local0, MEMORY_SLOT_SLECTOR) // select Local0 DIMM
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If (LEqual(MEMORY_SLOT_INSERT_EVENT, One)) { // Memory device needs check
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MEMORY_SLOT_NOTIFY_METHOD(Local0, 1)
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Store(1, MEMORY_SLOT_INSERT_EVENT)
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}
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// TODO: handle memory eject request
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Add(Local0, One, Local0) // goto next DIMM
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}
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Release(MEMORY_SLOT_LOCK)
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Return(One)
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}
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Method(MEMORY_SLOT_STATUS_METHOD, 1) {
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Store(Zero, Local0)
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Acquire(MEMORY_SLOT_LOCK, 0xFFFF)
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Store(ToInteger(Arg0), MEMORY_SLOT_SLECTOR) // select DIMM
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If (LEqual(MEMORY_SLOT_ENABLED, One)) {
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Store(0xF, Local0)
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}
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Release(MEMORY_SLOT_LOCK)
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Return(Local0)
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}
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Method(MEMORY_SLOT_CRS_METHOD, 1, Serialized) {
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Acquire(MEMORY_SLOT_LOCK, 0xFFFF)
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Store(ToInteger(Arg0), MEMORY_SLOT_SLECTOR) // select DIMM
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Name(MR64, ResourceTemplate() {
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QWordMemory(ResourceProducer, PosDecode, MinFixed, MaxFixed,
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Cacheable, ReadWrite,
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0x0000000000000000, // Address Space Granularity
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0x0000000000000000, // Address Range Minimum
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0xFFFFFFFFFFFFFFFE, // Address Range Maximum
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0x0000000000000000, // Address Translation Offset
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0xFFFFFFFFFFFFFFFF, // Address Length
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,, MW64, AddressRangeMemory, TypeStatic)
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})
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CreateDWordField(MR64, 14, MINL)
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CreateDWordField(MR64, 18, MINH)
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CreateDWordField(MR64, 38, LENL)
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CreateDWordField(MR64, 42, LENH)
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CreateDWordField(MR64, 22, MAXL)
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CreateDWordField(MR64, 26, MAXH)
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Store(MEMORY_SLOT_ADDR_HIGH, MINH)
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Store(MEMORY_SLOT_ADDR_LOW, MINL)
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Store(MEMORY_SLOT_SIZE_HIGH, LENH)
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Store(MEMORY_SLOT_SIZE_LOW, LENL)
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// 64-bit math: MAX = MIN + LEN - 1
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Add(MINL, LENL, MAXL)
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Add(MINH, LENH, MAXH)
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If (LLess(MAXL, MINL)) {
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Add(MAXH, One, MAXH)
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}
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If (LLess(MAXL, One)) {
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Subtract(MAXH, One, MAXH)
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}
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Subtract(MAXL, One, MAXL)
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If (LEqual(MAXH, Zero)){
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Name(MR32, ResourceTemplate() {
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DWordMemory(ResourceProducer, PosDecode, MinFixed, MaxFixed,
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Cacheable, ReadWrite,
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0x00000000, // Address Space Granularity
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0x00000000, // Address Range Minimum
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0xFFFFFFFE, // Address Range Maximum
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0x00000000, // Address Translation Offset
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0xFFFFFFFF, // Address Length
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,, MW32, AddressRangeMemory, TypeStatic)
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})
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CreateDWordField(MR32, MW32._MIN, MIN)
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CreateDWordField(MR32, MW32._MAX, MAX)
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CreateDWordField(MR32, MW32._LEN, LEN)
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Store(MINL, MIN)
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Store(MAXL, MAX)
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Store(LENL, LEN)
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Release(MEMORY_SLOT_LOCK)
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Return(MR32)
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}
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Release(MEMORY_SLOT_LOCK)
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Return(MR64)
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}
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Method(MEMORY_SLOT_PROXIMITY_METHOD, 1) {
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Acquire(MEMORY_SLOT_LOCK, 0xFFFF)
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Store(ToInteger(Arg0), MEMORY_SLOT_SLECTOR) // select DIMM
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Store(MEMORY_SLOT_PROXIMITY, Local0)
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Release(MEMORY_SLOT_LOCK)
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Return(Local0)
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}
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Method(MEMORY_SLOT_OST_METHOD, 4) {
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Acquire(MEMORY_SLOT_LOCK, 0xFFFF)
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Store(ToInteger(Arg0), MEMORY_SLOT_SLECTOR) // select DIMM
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Store(Arg1, MEMORY_SLOT_OST_EVENT)
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Store(Arg2, MEMORY_SLOT_OST_STATUS)
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Release(MEMORY_SLOT_LOCK)
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}
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} // Device()
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} // Scope()
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}
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