The ACPI sleep button can be implemented as a fixed hardware button or Control Method Sleep button.
The patch of implementing a fixed hardware sleep button was posted here 1). More discussions can be found here 2). Essentially, the discussion mainly focuses on whether the sleep button is implemented as a fixed hardware button or Control Method Sleep button. The latter benefits different architectures since the code can be shared among them. This patch set implements Control Method Sleep button for both x86 and ARM platform. For x86, a sleep button GPE event handler is implemented, so a GPE event is triggered to indicate the OSPM the sleep button is pressed. Tests have been done for Linux 6.6.0-rc2+, and Windows Server 2016, the sleep button works as expected. For ARM, a GED event is triggered to notify the OSPM. With proper debug knobs it is possible to see the guest OSPM acknowledges the sleep event: [ 268.429495] evregion-0119 ev_address_space_dispa: ----Entry [ 268.430480] evrgnini-0043 ev_system_memory_regio: ----Entry [ 268.431423] evrgnini-0079 ev_system_memory_regio: ----Exit- AE_OK [ 268.432303] evregion-0230 ev_address_space_dispa: Handler 0000000081544775 (@00000000e8f0a66d) Address 0000000009080000 [SystemMemory] [ 268.433943] evregion-0325 ev_address_space_dispa: ----Exit- AE_OK [ 268.434793] evmisc-0132 ev_queue_notify_reques: Dispatching Notify on [SLPB] (Device) Value 0x80 (Status Change) Node 00000000ada658b8 But that seems to be all, depicting that sleep/wakeup for ARM is broken and there are still missing some pieces of the puzzle. Nonetheless, we would like to take this RFC as an opportunity for updates on this subject as possible roadmaps. 1) https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg06478.html 2) https://lore.kernel.org/all/20210920095316.2dd13...@redhat.com/T/#mfe24f89778020deeacfe45083f3eea3cf9f55961 Annie Li (6): acpi: hmp/qmp: Add hmp/qmp support for system_sleep acpi: Implement control method sleep button test/acpi: allow DSDT table changes acpi: Support Control Method sleep button for x86 tests/acpi/bios-tables-test: update DSDT tables for Control Method Sleep button acpi: Send the GPE event of suspend and wakeup for x86 Miguel Luis (5): hw/acpi: Add ACPI GED support for the sleep event tests/acpi: allow FACP and DSDT table changes for arm/virt hw/arm: enable sleep support for arm/virt tests/acpi: Update FACP and DSDT tables for sleep button arm/virt: enable sleep support hmp-commands.hx | 14 +++++ hw/acpi/control_method_device.c | 49 ++++++++++++++++++ hw/acpi/core.c | 17 ++++-- hw/acpi/generic_event_device.c | 9 ++++ hw/acpi/meson.build | 1 + hw/arm/virt-acpi-build.c | 13 +++++ hw/arm/virt.c | 14 ++++- hw/core/machine-hmp-cmds.c | 5 ++ hw/core/machine-qmp-cmds.c | 11 ++++ hw/i386/acpi-build.c | 9 ++++ include/hw/acpi/acpi.h | 1 + include/hw/acpi/acpi_dev_interface.h | 1 + include/hw/acpi/control_method_device.h | 20 +++++++ include/hw/acpi/generic_event_device.h | 1 + include/hw/arm/virt.h | 1 + include/monitor/hmp.h | 1 + qapi/machine.json | 18 +++++++ qapi/pragma.json | 1 + tests/data/acpi/pc/DSDT | Bin 6830 -> 7012 bytes tests/data/acpi/pc/DSDT.acpierst | Bin 6741 -> 6923 bytes tests/data/acpi/pc/DSDT.acpihmat | Bin 8155 -> 8337 bytes tests/data/acpi/pc/DSDT.bridge | Bin 13701 -> 13883 bytes tests/data/acpi/pc/DSDT.cphp | Bin 7294 -> 7476 bytes tests/data/acpi/pc/DSDT.dimmpxm | Bin 8484 -> 8666 bytes tests/data/acpi/pc/DSDT.hpbridge | Bin 6781 -> 6963 bytes tests/data/acpi/pc/DSDT.hpbrroot | Bin 3337 -> 3519 bytes tests/data/acpi/pc/DSDT.ipmikcs | Bin 6902 -> 7084 bytes tests/data/acpi/pc/DSDT.memhp | Bin 8189 -> 8371 bytes tests/data/acpi/pc/DSDT.nohpet | Bin 6688 -> 6870 bytes tests/data/acpi/pc/DSDT.numamem | Bin 6836 -> 7018 bytes tests/data/acpi/pc/DSDT.roothp | Bin 10623 -> 10805 bytes tests/data/acpi/q35/DSDT | Bin 8355 -> 8537 bytes tests/data/acpi/q35/DSDT.acpierst | Bin 8372 -> 8554 bytes tests/data/acpi/q35/DSDT.acpihmat | Bin 9680 -> 9862 bytes tests/data/acpi/q35/DSDT.acpihmat-noinitiator | Bin 8634 -> 8816 bytes tests/data/acpi/q35/DSDT.applesmc | Bin 8401 -> 8583 bytes tests/data/acpi/q35/DSDT.bridge | Bin 11968 -> 12150 bytes tests/data/acpi/q35/DSDT.core-count | Bin 12913 -> 13095 bytes tests/data/acpi/q35/DSDT.core-count2 | Bin 33770 -> 33952 bytes tests/data/acpi/q35/DSDT.cphp | Bin 8819 -> 9001 bytes tests/data/acpi/q35/DSDT.cxl | Bin 9713 -> 9895 bytes tests/data/acpi/q35/DSDT.dimmpxm | Bin 10009 -> 10191 bytes tests/data/acpi/q35/DSDT.ipmibt | Bin 8430 -> 8612 bytes tests/data/acpi/q35/DSDT.ipmismbus | Bin 8443 -> 8625 bytes tests/data/acpi/q35/DSDT.ivrs | Bin 8372 -> 8554 bytes tests/data/acpi/q35/DSDT.memhp | Bin 9714 -> 9896 bytes tests/data/acpi/q35/DSDT.mmio64 | Bin 9485 -> 9667 bytes tests/data/acpi/q35/DSDT.multi-bridge | Bin 13208 -> 13390 bytes tests/data/acpi/q35/DSDT.noacpihp | Bin 8235 -> 8417 bytes tests/data/acpi/q35/DSDT.nohpet | Bin 8213 -> 8395 bytes tests/data/acpi/q35/DSDT.numamem | Bin 8361 -> 8543 bytes tests/data/acpi/q35/DSDT.pvpanic-isa | Bin 8456 -> 8638 bytes tests/data/acpi/q35/DSDT.thread-count | Bin 12913 -> 13095 bytes tests/data/acpi/q35/DSDT.thread-count2 | Bin 33770 -> 33952 bytes tests/data/acpi/q35/DSDT.tis.tpm12 | Bin 8961 -> 9143 bytes tests/data/acpi/q35/DSDT.tis.tpm2 | Bin 8987 -> 9169 bytes tests/data/acpi/q35/DSDT.type4-count | Bin 18589 -> 18771 bytes tests/data/acpi/q35/DSDT.viot | Bin 9464 -> 9646 bytes tests/data/acpi/q35/DSDT.xapic | Bin 35718 -> 35900 bytes tests/data/acpi/virt/DSDT | Bin 5196 -> 5278 bytes tests/data/acpi/virt/DSDT.acpihmatvirt | Bin 5282 -> 5364 bytes tests/data/acpi/virt/DSDT.memhp | Bin 6557 -> 6639 bytes tests/data/acpi/virt/DSDT.pxb | Bin 7679 -> 7761 bytes tests/data/acpi/virt/DSDT.topology | Bin 5398 -> 5480 bytes tests/data/acpi/virt/FACP | Bin 276 -> 276 bytes 65 files changed, 181 insertions(+), 5 deletions(-) create mode 100644 hw/acpi/control_method_device.c create mode 100644 include/hw/acpi/control_method_device.h -- 2.34.3
