77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
/*
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* Copyright (c) 2026, Chloe M.
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* Provided under the BSD-3 clause.
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*
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* Description: Platform MMU HAL interface
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* Author: Chloe M.
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*/
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#ifndef _HAL_MMU_H_
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#define _HAL_MMU_H_ 1
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#include <ptapi/ptmm.h>
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#include <ptapi/status.h>
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#include <hal/vas.h>
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#include <ptdef.h>
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/*
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* Represents valid page sizes that can be mapped
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* with.
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*/
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typedef enum {
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PAGESIZE_4K
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} MMU_PAGESIZE;
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/*
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* Read the current virtual address space into an
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* MMU_VAS descriptor.
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*
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* @Result: Result is written here
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*/
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VOID HalMmuReadVas(MMU_VAS *Result);
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/*
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* Write a virtual address space into the current context
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* from an MMU_VAS descriptor
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*
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* @Vas: VAS to write to current context
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*/
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VOID HalMmuWriteVas(const MMU_VAS *Vas);
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/*
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* Fork a virtual address space with the user-portion zeroed
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* out.
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*
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* @Source: Source VAS to fork from
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* @Result: Result is written here
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*/
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PT_STATUS HalMmuForkVas(const MMU_VAS *Source, MMU_VAS *Result);
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/*
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* Map a single page of memory
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*
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* @Vas: Virtual address space to map within
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* @VirtualBase: Virtual address base to map
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* @Prot: Protection flags
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* @PageSize: Pagesize to map as
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*/
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PT_STATUS HalMmuMapPage(
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MMU_VAS *Vas, UPTR VirtualBase,
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UPTR PhysicalBase, MM_PROT Prot,
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MMU_PAGESIZE PageSize
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);
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/*
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* Unmap a single page of memory
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*
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* @Vas: Virtual address space to unmap within
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* @VirtualBase: Virtual address to unmap
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* @PageSize: Page size to unmap
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*/
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PT_STATUS HalMmuUnmapPage(
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MMU_VAS *Vas, UPTR VirtualBase,
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MMU_PAGESIZE PageSize
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);
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#endif /* !_HAL_MMU_H_ */
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