finished the rework of vmmap.c etc.
This commit is contained in:
Eric J. Bowersox
@@ -39,22 +39,52 @@
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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 containing physical address as key */
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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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RBTREE rbtPageTables; /* tree containing page tables this context owns */
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} VMCTXT, *PVMCTXT;
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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(PTTB pTTB, KERNADDR vma);
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extern HRESULT MmDemapPages(PTTB pTTB, PTTBAUX pTTBAux, KERNADDR vmaBase, UINT32 cpg);
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extern HRESULT MmMapPages(PTTB pTTB, PTTBAUX pTTBAux, PHYSADDR paBase, KERNADDR vmaBase, UINT32 cpg,
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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(PTTB pTTB, PTTBAUX pTTBAux, PHYSADDR paBase, UINT32 cpg, UINT32 uiTableFlags,
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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(PTTB pTTB, PTTBAUX pTTBAux, KERNADDR vmaBase, UINT32 cpg);
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extern HRESULT MmDemapKernelPages(KERNADDR vmaBase, UINT32 cpg);
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/* Initialization functions only */
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extern void _MmInit(PSTARTUP_INFO pstartup);
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@@ -103,6 +103,7 @@
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/* TTB auxiliary descriptor bits */
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#define TTBAUX_SACRED 0x00000001 /* sacred entry, do not deallocate */
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#define TTBAUX_UNWRITEABLE 0x00000002 /* entry unwriteable */
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/* Small page table entry bits */
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#define PGTBLSM_XN 0x00000001 /* Execute-Never */
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@@ -131,20 +132,21 @@
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/* Page auxiliary descriptor bits */
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#define PGAUX_SACRED 0x00000001 /* sacred entry, do not deallocate */
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#define PGAUX_UNWRITEABLE 0x00000002 /* entry unwriteable */
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/* Combinations of flags we use regularly. */
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#define TTBFLAGS_LIB_CODE TTBPGTBL_ALWAYS
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#define PGTBLFLAGS_LIB_CODE (PGTBLSM_ALWAYS | PGTBLSM_B | PGTBLSM_C | PGTBLSM_AP10)
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#define PGAUXFLAGS_LIB_CODE PGAUX_SACRED
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#define PGAUXFLAGS_LIB_CODE (PGAUX_SACRED | PGAUX_UNWRITEABLE)
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#define TTBFLAGS_KERNEL_CODE TTBPGTBL_ALWAYS
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#define PGTBLFLAGS_KERNEL_CODE (PGTBLSM_ALWAYS | PGTBLSM_B | PGTBLSM_C | PGTBLSM_AP01)
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#define PGAUXFLAGS_KERNEL_CODE PGAUX_SACRED
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#define PGAUXFLAGS_KERNEL_CODE (PGAUX_SACRED | PGAUX_UNWRITEABLE)
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#define TTBFLAGS_KERNEL_DATA TTBPGTBL_ALWAYS
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#define PGTBLFLAGS_KERNEL_DATA (PGTBLSM_XN | PGTBLSM_ALWAYS | PGTBLSM_B | PGTBLSM_C | PGTBLSM_AP01)
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#define PGAUXFLAGS_KERNEL_DATA PGAUX_SACRED
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#define TTBFLAGS_INIT_CODE TTBFLAGS_KERNEL_CODE
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#define PGTBLFLAGS_INIT_CODE PGTBLFLAGS_KERNEL_CODE
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#define PGAUXFLAGS_INIT_CODE 0
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#define PGAUXFLAGS_INIT_CODE PGAUX_UNWRITEABLE
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#define TTBFLAGS_INIT_DATA TTBFLAGS_KERNEL_DATA
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#define PGTBLFLAGS_INIT_DATA PGTBLFLAGS_KERNEL_DATA
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#define PGAUXFLAGS_INIT_DATA 0
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@@ -207,7 +209,8 @@ typedef union tagTTB {
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/* TTB auxiliary descriptor */
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typedef struct tagTTBAUXENTRY {
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unsigned sacred : 1; /* sacred TTB - should never be deallocated */
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unsigned reserved : 31; /* reserved for future allocation */
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unsigned unwriteable : 1; /* entry is not writeable */
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unsigned reserved : 30; /* reserved for future allocation */
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} TTBAUXENTRY, *PTTBAUXENTRY;
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/* TTB auxiliary table entry */
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@@ -246,7 +249,8 @@ typedef union tagPGTBL {
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/* page auxiliary descriptor */
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typedef struct tagPGAUXENTRY {
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unsigned sacred : 1; /* sacred page - should never be deallocated */
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unsigned reserved : 31; /* reserved for future allocation */
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unsigned unwriteable : 1; /* entry is not writeable */
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unsigned reserved : 30; /* reserved for future allocation */
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} PGAUXENTRY, *PPGAUXENTRY;
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/* page table auxiliary entry */
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@@ -264,6 +268,9 @@ typedef struct tagPAGETAB {
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/* VMA index macros */
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#define mmVMA2TTBIndex(vma) (((vma) >> (SYS_PAGE_BITS + SYS_PGTBL_BITS)) & ((1 << SYS_TTB_BITS) - 1))
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#define mmVMA2PGTBLIndex(vma) (((vma) >> SYS_PAGE_BITS) & ((1 << SYS_PGTBL_BITS) - 1))
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#define mmIndices2VMA3(ttb, pgtbl, ofs) \
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((((ttb) & ((1 << SYS_TTB_BITS) - 1)) << (SYS_PAGE_BITS + SYS_PGTBL_BITS)) | \
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(((pgtbl) & ((1 << SYS_PGTBL_BITS) - 1)) << SYS_PAGE_BITS) | ((ofs) & (SYS_PAGE_SIZE - 1)))
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/*
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* Data structures for the Master Page Database.
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@@ -82,9 +82,10 @@ typedef struct tagRBTREE {
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PRBTREENODE ptnRoot; /* pointer to root of tree */
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} RBTREE, *PRBTREE;
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/* Macro to initialize the tree head. */
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/* Tree macros. */
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#define rbtInitTree(ptree, pfnCompare) \
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do { (ptree)->pfnTreeCompare = (pfnCompare); (ptree)->ptnRoot = NULL; } while (0)
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#define rbtIsEmpty(ptree) MAKEBOOL(!((ptree)->ptnRoot))
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/* Type of function used by RbtWalk. */
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typedef BOOL (*PFNRBTWALK)(PRBTREE, PRBTREENODE, PVOID);
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@@ -104,5 +104,6 @@
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#define MEMMGR_E_ENDTTB SCODE_CAST(0x86010004) /* tried to "walk off" end of TTB */
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#define MEMMGR_E_NOSACRED SCODE_CAST(0x86010005) /* tried to demap a "sacred" entry */
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#define MEMMGR_E_NOKERNSPC SCODE_CAST(0x86010006) /* no kernel space */
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#define MEMMGR_E_RECURSED SCODE_CAST(0x86010007) /* tried to recurse into page allocation */
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#endif /* __SCODE_H_INCLUDED */
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