forked from 0ad/0ad
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
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/**
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* =========================================================================
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* File : aken.h
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* Project : 0 A.D.
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* Description : Aken driver interface
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* =========================================================================
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*/
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// license: GPL; see lib/license.txt
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// Aken - custodian of the ferryboat to the underworld in Egyptian mythology,
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// and a driver that shuttles between applications and kernel mode resources.
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#ifndef INCLUDED_AKEN
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#define INCLUDED_AKEN
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#define AKEN_NAME "Aken"
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// device type
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#define FILE_DEVICE_AKEN 53498 // in the "User Defined" range."
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#define AKEN_IOCTL 0x800 // 0x800..0xFFF are for 'customer' use.
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#define IOCTL_AKEN_READ_PORT CTL_CODE(FILE_DEVICE_AKEN, AKEN_IOCTL+0, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_AKEN_WRITE_PORT CTL_CODE(FILE_DEVICE_AKEN, AKEN_IOCTL+1, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_AKEN_MAP CTL_CODE(FILE_DEVICE_AKEN, AKEN_IOCTL+2, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_AKEN_UNMAP CTL_CODE(FILE_DEVICE_AKEN, AKEN_IOCTL+3, METHOD_BUFFERED, FILE_ANY_ACCESS)
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// input and output data structures for the IOCTLs
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#pragma pack(push, 1)
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struct AkenReadPortIn
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{
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USHORT port;
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UCHAR numBytes;
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};
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struct AkenReadPortOut
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{
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DWORD32 value;
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};
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struct AkenWritePortIn
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{
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DWORD32 value;
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USHORT port;
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UCHAR numBytes;
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};
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struct AkenMapIn
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{
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// note: fixed-width types allow the 32 or 64-bit Mahaf wrapper to
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// interoperate with the 32 or 64-bit Aken driver.
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DWORD64 physicalAddress;
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DWORD64 numBytes;
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};
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struct AkenMapOut
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{
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DWORD64 virtualAddress;
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};
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struct AkenUnmapIn
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{
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DWORD64 virtualAddress;
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};
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#pragma pack(pop)
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#endif // #ifndef INCLUDED_AKEN
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