/* Removes PCI0's 32-bit Allocation Limitation to resolve PCIe device support on Sandy and * Ivy Bridge Macs, mainly applicable for Audio and eGPU support. * BUF0 to BUF1 patch required to override exisiting BuffObj in DSDT. * * Source: * https://egpu.io/forums/pc-setup/fix-dsdt-override-to-correct-error-12/ */ DefinitionBlock ("", "SSDT", 2, "DRTNIA", "WinPCI", 0x00000000) { External (_SB_.PCI0, DeviceObj) Scope (\_SB.PCI0) { Store ("Injecting new BUF0 BuffObj", Debug) Name (BUF0, ResourceTemplate () { WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode, 0x0000, // Granularity 0x0000, // Range Minimum 0x00FF, // Range Maximum 0x0000, // Translation Offset 0x0100, // Length ,, ) DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange, 0x00000000, // Granularity 0x00000000, // Range Minimum 0x00000CF7, // Range Maximum 0x00000000, // Translation Offset 0x00000CF8, // Length ,, , TypeStatic, DenseTranslation) IO (Decode16, 0x0CF8, // Range Minimum 0x0CF8, // Range Maximum 0x01, // Alignment 0x08, // Length ) DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange, 0x00000000, // Granularity 0x00000D00, // Range Minimum 0x0000FFFF, // Range Maximum 0x00000000, // Translation Offset 0x0000F300, // Length ,, , TypeStatic, DenseTranslation) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000A0000, // Range Minimum 0x000BFFFF, // Range Maximum 0x00000000, // Translation Offset 0x00020000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000C0000, // Range Minimum 0x000C3FFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000C4000, // Range Minimum 0x000C7FFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000C8000, // Range Minimum 0x000CBFFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000CC000, // Range Minimum 0x000CFFFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000D0000, // Range Minimum 0x000D3FFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000D4000, // Range Minimum 0x000D7FFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000D8000, // Range Minimum 0x000DBFFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000DC000, // Range Minimum 0x000DFFFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000E0000, // Range Minimum 0x000E3FFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000E4000, // Range Minimum 0x000E7FFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000E8000, // Range Minimum 0x000EBFFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000EC000, // Range Minimum 0x000EFFFF, // Range Maximum 0x00000000, // Translation Offset 0x00004000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x000F0000, // Range Minimum 0x000FFFFF, // Range Maximum 0x00000000, // Translation Offset 0x00010000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x00000000, // Range Minimum 0xFEAFFFFF, // Range Maximum 0x00000000, // Translation Offset 0xFEB00000, // Length ,, , AddressRangeMemory, TypeStatic) DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0xFED40000, // Range Minimum 0xFED44FFF, // Range Maximum 0x00000000, // Translation Offset 0x00005000, // Length ,, , AddressRangeMemory, TypeStatic) QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x0000000000000000, // Granularity 0x0000000C20000000, // Range Minimum, set it to 48.5GB 0x0000000E0FFFFFFF, // Range Maximum, set it to 56.25GB 0x0000000000000000, // Translation Offset 0x00000001F0000000, // Length calculated by Range Max - Range Min. ,, , AddressRangeMemory, TypeStatic) }) } }