111 lines
4.6 KiB
C
111 lines
4.6 KiB
C
/*
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* This file is part of the COMROGUE Operating System for Raspberry Pi
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*
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* Copyright (c) 2013, Eric J. Bowersox / Erbosoft Enterprises
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* All rights reserved.
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*
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* This program is free for commercial and non-commercial use as long as the following conditions are
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* adhered to.
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*
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* Copyright in this file remains Eric J. Bowersox and/or Erbosoft, and as such any copyright notices
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* in the code are not to be removed.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this list of conditions and
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* the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
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* the following disclaimer in the documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* "Raspberry Pi" is a trademark of the Raspberry Pi Foundation.
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*/
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#ifndef __MEMMGR_H_INCLUDED
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#define __MEMMGR_H_INCLUDED
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#ifdef __COMROGUE_INTERNALS__
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#ifndef __ASM__
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#include <comrogue/types.h>
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#include <comrogue/compiler_macros.h>
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#include <comrogue/internals/mmu.h>
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#include <comrogue/internals/rbtree.h>
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#include <comrogue/internals/startup.h>
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/*------------------------------------------
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* The COMROGUE memory management subsystem
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*------------------------------------------
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*/
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/* Nodes in the page table tree. */
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typedef struct tagPAGENODE {
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RBTREENODE rbtn; /* RBT node */
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PHYSADDR paPageTable; /* physical address of page table */
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PPAGETAB ppt; /* pointer to page table */
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} PAGENODE, *PPAGENODE;
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/* Virtual memory context. */
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typedef struct tagVMCTXT {
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PTTB pTTB; /* pointer to the TTB */
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PTTBAUX pTTBAux; /* pointer to the TTB auxiliary data */
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UINT32 uiMaxIndex; /* max index into the above tables */
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PHYSADDR paTTB; /* physical address of the TTB */
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RBTREE rbtPageTables; /* tree containing page tables this context owns */
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} VMCTXT, *PVMCTXT;
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/* Invalid page return. */
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#define INVALID_PAGE ((UINT32)(-1))
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/* Page allocation flags. */
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#define PGALLOC_ZERO 0x00000001 /* allocated page must be zeroed */
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CDECL_BEGIN
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/* Low-level maintenance functions */
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extern void _MmFlushCacheForPage(KERNADDR vmaPage, BOOL bWriteback);
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extern void _MmFlushCacheForSection(KERNADDR vmaSection, BOOL bWriteback);
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extern void _MmFlushTLBForPage(KERNADDR vmaPage);
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extern void _MmFlushTLBForPageAndContext(KERNADDR vmaPage, UINT32 uiASID);
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extern void _MmFlushTLBForSection(KERNADDR vmaSection);
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extern void _MmFlushTLBForSectionAndContext(KERNADDR vmaSection, UINT32 uiASID);
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extern PTTB _MmGetTTB0(void);
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extern void _MmSetTTB0(PTTB pTTB);
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/* Kernel address space functions */
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extern KERNADDR _MmAllocKernelAddr(UINT32 cpgNeeded);
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extern void _MmFreeKernelAddr(KERNADDR kaBase, UINT32 cpgToFree);
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/* Page mapping functions */
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extern PHYSADDR MmGetPhysAddr(PVMCTXT pvmctxt, KERNADDR vma);
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extern HRESULT MmDemapPages(PVMCTXT pvmctxt, KERNADDR vmaBase, UINT32 cpg);
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extern HRESULT MmMapPages(PVMCTXT pvmctxt, PHYSADDR paBase, KERNADDR vmaBase, UINT32 cpg,
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UINT32 uiTableFlags, UINT32 uiPageFlags, UINT32 uiAuxFlags);
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extern HRESULT MmMapKernelPages(PHYSADDR paBase, UINT32 cpg, UINT32 uiTableFlags,
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UINT32 uiPageFlags, UINT32 uiAuxFlags, PKERNADDR pvmaLocation);
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extern HRESULT MmDemapKernelPages(KERNADDR vmaBase, UINT32 cpg);
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/* Page allocation functions */
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extern HRESULT MmAllocatePage(UINT32 uiFlags, UINT32 tag, UINT32 subtag, PPHYSADDR ppaNewPage);
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extern HRESULT MmFreePage(PHYSADDR paPage, UINT32 tag, UINT32 subtag);
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/* Initialization functions only */
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extern void _MmInit(PSTARTUP_INFO pstartup);
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CDECL_END
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#endif /* __ASM__ */
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#endif /* __COMROGUE_INTERNALS__ */
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#endif /* __MEMMGR_H_INCLUDED */
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