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46 lines
1.3 KiB
Plaintext
46 lines
1.3 KiB
Plaintext
/*
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* This table provides an example of creating a missing ACPI device
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* to ensure early DeviceProperty application. In this example
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* a GPU device is created for a platform having an extra PCI
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* bridge in the path - PCI0.PEG0.PEGP.BRG0.GFX0:
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* PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)
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* Such tables are particularly relevant for macOS 11.0 and newer.
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*/
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DefinitionBlock ("", "SSDT", 2, "ACDT", "BRG0", 0x00000000)
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{
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External (_SB_.PCI0.PEG0.PEGP, DeviceObj)
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Scope (\_SB.PCI0.PEG0.PEGP)
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{
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/*
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* This is a PCI bridge device present on PEGP.
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* Normally seen as pci-bridge in I/O Registry.
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*/
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Device (BRG0)
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{
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Name (_ADR, Zero)
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Method (_STA, 0, NotSerialized) // _STA: Status
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{
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If (_OSI ("Darwin"))
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{
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Return (0x0F)
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}
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Else
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{
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Return (Zero)
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}
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}
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/*
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* This is an actual GPU device present on the bridge.
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* Normally seen as display in I/O Registry.
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*/
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Device (GFX0)
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{
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Name (_ADR, Zero) // _ADR: Address
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}
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}
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}
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}
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