janwas
f039e1ce76
prevent using mahaf if it's going to fail anyway module_init: add ModuleIsError (allows acpi and mahaf init routines to pass failure notification on to their second and later callers) counter: safer memory management This was SVN commit r5333.
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/**
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* =========================================================================
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* File : mahaf.h
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* Project : 0 A.D.
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* Description : user-mode interface to Aken driver
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* =========================================================================
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*/
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// license: GPL; see lib/license.txt
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// Mahaf - ferryman in Egyptian mythology that wakes up Aken,
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// and the interface to the Aken driver.
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#ifndef INCLUDED_MAHAF
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#define INCLUDED_MAHAF
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/**
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* @return whether mapping physical memory is known to be dangerous
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* on this platform.
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*
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* callable before or after mahaf_Init.
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*
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* note: mahaf_MapPhysicalMemory will complain if it
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* is called despite this function having returned true.
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**/
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extern bool mahaf_IsPhysicalMappingDangerous();
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extern bool mahaf_Init();
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extern void mahaf_Shutdown();
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extern u8 mahaf_ReadPort8 (u16 port);
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extern u16 mahaf_ReadPort16(u16 port);
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extern u32 mahaf_ReadPort32(u16 port);
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extern void mahaf_WritePort8 (u16 port, u8 value);
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extern void mahaf_WritePort16(u16 port, u16 value);
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extern void mahaf_WritePort32(u16 port, u32 value);
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extern volatile void* mahaf_MapPhysicalMemory(uintptr_t physicalAddress, size_t numBytes);
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extern void mahaf_UnmapPhysicalMemory(volatile void* virtualAddress);
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#endif // INCLUDED_MAHAF
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