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2a3282c68e
qemu/hw/acpi
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Ben Widawsky 2a3282c68e acpi/cxl: Add _OSC implementation (9.14.2) 
CXL 2.0 specification adds 2 new dwords to the existing _OSC definition
from PCIe. The new dwords are accessed with a new uuid. This
implementation supports what is in the specification.

iasl -d decodes the result of this patch as:

Name (SUPP, Zero)
Name (CTRL, Zero)
Name (SUPC, Zero)
Name (CTRC, Zero)
Method (_OSC, 4, NotSerialized)  // _OSC: Operating System Capabilities
{
    CreateDWordField (Arg3, Zero, CDW1)
    If (((Arg0 == ToUUID ("33db4d5b-1ff7-401c-9657-7441c03dd766") /* PCI Host Bridge Device */) || (Arg0 == ToUUID ("68f2d50b-c469-4d8a-bd3d-941a103fd3fc") /* Unknown UUID */)))
    {
        CreateDWordField (Arg3, 0x04, CDW2)
        CreateDWordField (Arg3, 0x08, CDW3)
        Local0 = CDW3 /* \_SB_.PC0C._OSC.CDW3 */
        Local0 &= 0x1F
        If ((Arg1 != One))
        {
            CDW1 |= 0x08
        }

        If ((CDW3 != Local0))
        {
            CDW1 |= 0x10
        }

        SUPP = CDW2 /* \_SB_.PC0C._OSC.CDW2 */
        CTRL = CDW3 /* \_SB_.PC0C._OSC.CDW3 */
        CDW3 = Local0
        If ((Arg0 == ToUUID ("68f2d50b-c469-4d8a-bd3d-941a103fd3fc") /* Unknown UUID */))
        {
            CreateDWordField (Arg3, 0x0C, CDW4)
            CreateDWordField (Arg3, 0x10, CDW5)
            SUPC = CDW4 /* \_SB_.PC0C._OSC.CDW4 */
            CTRC = CDW5 /* \_SB_.PC0C._OSC.CDW5 */
            CDW5 |= One
        }

        Return (Arg3)
    }
    Else
    {
        CDW1 |= 0x04
        Return (Arg3)
    }

Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20220429144110.25167-25-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-05-13 06:13:36 -04:00
..
acpi_interface.c acpi: extend ACPI interface to provide send_event hook 2016-06-07 15:36:54 +03:00
acpi-cpu-hotplug-stub.c hw/acpi: refactor acpi hp modules so that targets can just use what they need 2021-09-04 09:07:46 -04:00
acpi-mem-hotplug-stub.c hw/acpi: refactor acpi hp modules so that targets can just use what they need 2021-09-04 09:07:46 -04:00
acpi-nvdimm-stub.c hw/acpi: refactor acpi hp modules so that targets can just use what they need 2021-09-04 09:07:46 -04:00
acpi-pci-hotplug-stub.c acpi: fix acpi_index migration 2022-04-06 20:03:26 +01:00
acpi-stub.c Include qmp-commands.h exactly where needed 2018-02-09 13:52:10 +01:00
acpi-x86-stub.c acpi: x86: set enabled when composing _MAT entries 2021-10-05 17:30:57 -04:00
aml-build-stub.c acpi: add aml builder stubs 2020-10-21 11:36:19 +02:00
aml-build.c hw/acpi/aml-build: Use existing CPU topology to build PPTT table 2022-05-09 11:47:55 +01:00
bios-linker-loader.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
core.c acpi: fix QEMU crash when started with SLIC table 2022-01-07 19:30:13 -05:00
cpu_hotplug.c qom: Put name parameter before value / visitor parameter 2020-07-10 15:18:08 +02:00
cpu.c Remove unnecessary minimum_version_id_old fields 2022-01-28 15:38:23 +01:00
cxl-stub.c acpi/cxl: Add _OSC implementation (9.14.2) 2022-05-13 06:13:36 -04:00
cxl.c acpi/cxl: Add _OSC implementation (9.14.2) 2022-05-13 06:13:36 -04:00
erst.c hw/acpi/erst: clean up unused IS_UEFI_CPER_RECORD macro 2022-03-04 08:30:52 -05:00
generic_event_device.c acpi/ged: fix reset cause 2021-07-03 03:12:35 -04:00
ghes-stub.c hw/acpi: Provide function acpi_ghes_present() 2021-06-21 16:49:37 +01:00
ghes.c acpi: acpi_build_hest: use acpi_table_begin()/acpi_table_end() instead of build_header() 2021-10-05 17:30:57 -04:00
hmat.c Use g_new() & friends where that makes obvious sense 2022-03-21 15:44:44 +01:00
hmat.h acpi: Permit OEM ID and OEM table ID fields to be changed 2021-02-05 08:52:59 -05:00
ich9.c Remove unnecessary minimum_version_id_old fields 2022-01-28 15:38:23 +01:00
ipmi-stub.c ipmi: Fix SSIF ACPI handling to use the right CRS 2019-09-20 14:08:10 -05:00
ipmi.c ipmi: Fix SSIF ACPI handling to use the right CRS 2019-09-20 14:08:10 -05:00
Kconfig acpi/cxl: Add _OSC implementation (9.14.2) 2022-05-13 06:13:36 -04:00
memory_hotplug.c hw/acpi/memory_hotplug: Remove unused 'hw/acpi/pc-hotplug.h' header 2022-02-21 10:18:06 +01:00
meson.build acpi/cxl: Add _OSC implementation (9.14.2) 2022-05-13 06:13:36 -04:00
nvdimm.c nvdimm: release the correct device list 2021-10-05 17:30:57 -04:00
pci.c acpi: build_mcfg: use acpi_table_begin()/acpi_table_end() instead of build_header() 2021-10-05 17:30:57 -04:00
pcihp.c acpi: fix acpi_index migration 2022-04-06 20:03:26 +01:00
piix4.c acpi: fix acpi_index migration 2022-04-06 20:03:26 +01:00
tco.c Remove unnecessary minimum_version_id_old fields 2022-01-28 15:38:23 +01:00
tpm.c docs: fix references to docs/specs/tpm.rst 2021-06-02 06:51:09 +02:00
trace-events ACPI ERST: support for ACPI ERST feature 2022-02-06 04:33:50 -05:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
utils.c acpi: Set proper maximum size for "etc/acpi/rsdp" blob 2021-03-22 18:58:19 -04:00
viot.c hw/acpi: Add VIOT table 2021-11-01 18:49:10 -04:00
viot.h hw/acpi: Add VIOT table 2021-11-01 18:49:10 -04:00
vmgenid.c acpi: vmgenid_build_acpi: use acpi_table_begin()/acpi_table_end() instead of build_header() 2021-10-05 17:30:57 -04:00