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x86: pci: acpi: reorder Device's _DSM method

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align _DSM method in empty slot descriptor with
a populated slot position.
Expected change:
  +            Device (SE8)
  +            {
  +                Name (_ADR, 0x001D0000)  // _ADR: Address
  +                Name (ASUN, 0x1D)
                   Method (_DSM, 4, Serialized)  // _DSM: Device-Specific Method
                   {
                       Local0 = Package (0x02)
                           {
                               BSEL,
                               ASUN
                           }
                       Return (PDSM (Arg0, Arg1, Arg2, Arg3, Local0))
                   }
  -            }

  -            Device (SE8)
  -            {
  -                Name (_ADR, 0x001D0000)  // _ADR: Address
  -                Name (ASUN, 0x1D)
                   Name (_SUN, 0x1D)  // _SUN: Slot User Number
                   Method (_EJ0, 1, NotSerialized)  // _EJx: Eject Device
                   {
                       PCEJ (BSEL, _SUN)
                   }
  +            }

i.e. put _DSM right after ASUN, with _SUN/_EJ0 following it.

that will eliminate contextual changes (causing test failures)
when follow up patches merge code generating populated and empty
slots descriptors.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20220701133515.137890-16-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 2022-07-01 09:35:13 -04:00 • committed by Michael S. Tsirkin
parent 166cff2b8f
commit 87debd32a8
1 changed files with 1 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

4
hw/i386/acpi-build.c
View file

@ -444,15 +444,13 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
dev = aml_device("S%.02X", devfn);
aml_append(dev, aml_name_decl("_ADR", aml_int(adr)));
aml_append(dev, aml_name_decl("ASUN", aml_int(slot)));
aml_append(dev, aml_pci_device_dsm());
aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
aml_append(method,
aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
);
aml_append(dev, method);
aml_append(dev, aml_pci_device_dsm());
aml_append(parent_scope, dev);
build_append_pcihp_notify_entry(notify_method, slot);