Author: sir_richard Date: Thu Feb 18 17:56:54 2010 New Revision: 45610
URL: http://svn.reactos.org/svn/reactos?rev=45610&view=rev Log: [NTOS]: Build the actual ARM3 PFN database.
Modified: trunk/reactos/ntoskrnl/mm/ARM3/mminit.c
Modified: trunk/reactos/ntoskrnl/mm/ARM3/mminit.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/mminit.c?r... ============================================================================== --- trunk/reactos/ntoskrnl/mm/ARM3/mminit.c [iso-8859-1] (original) +++ trunk/reactos/ntoskrnl/mm/ARM3/mminit.c [iso-8859-1] Thu Feb 18 17:56:54 2010 @@ -636,14 +636,13 @@ if (MiIsRegularMemory(LoaderBlock, PageFrameIndex)) { /* Yes we do, set it up */ - //DPRINT1("PDE is valid, setting up PFN entry\n"); Pfn1 = MI_PFN_TO_PFNENTRY(PageFrameIndex); Pfn1->u4.PteFrame = StartupPdIndex; Pfn1->PteAddress = PointerPde; Pfn1->u2.ShareCount++; Pfn1->u3.e2.ReferenceCount = 1; Pfn1->u3.e1.PageLocation = ActiveAndValid; - Pfn1->u3.e1.CacheAttribute = MiCached; + Pfn1->u3.e1.CacheAttribute = MiNonCached; } else { @@ -686,7 +685,7 @@ Pfn2->u2.ShareCount++; Pfn2->u3.e2.ReferenceCount = 1; Pfn2->u3.e1.PageLocation = ActiveAndValid; - Pfn2->u3.e1.CacheAttribute = MiCached; + Pfn2->u3.e1.CacheAttribute = MiNonCached; } } } @@ -712,21 +711,181 @@ NTAPI MiBuildPfnDatabaseZeroPage(VOID) { - /* FIXME: TODO */ + PMMPFN Pfn1; + PMMPDE PointerPde; + + /* Grab the lowest page and check if it has no real references */ + Pfn1 = MI_PFN_TO_PFNENTRY(MmLowestPhysicalPage); + if (!(MmLowestPhysicalPage) && !(Pfn1->u3.e2.ReferenceCount)) + { + /* Make it a bogus page to catch errors */ + PointerPde = MiAddressToPde(0xFFFFFFFF); + Pfn1->u4.PteFrame = PFN_FROM_PTE(PointerPde); + Pfn1->PteAddress = PointerPde; + Pfn1->u2.ShareCount++; + Pfn1->u3.e2.ReferenceCount = 0xFFF0; + Pfn1->u3.e1.PageLocation = ActiveAndValid; + Pfn1->u3.e1.CacheAttribute = MiNonCached; + } }
VOID NTAPI MiBuildPfnDatabaseFromLoaderBlock(IN PLOADER_PARAMETER_BLOCK LoaderBlock) { - /* FIXME: TODO */ + PLIST_ENTRY NextEntry; + PFN_NUMBER PageCount = 0; + PMEMORY_ALLOCATION_DESCRIPTOR MdBlock; + PFN_NUMBER PageFrameIndex; + PMMPFN Pfn1; + PMMPTE PointerPte; + PMMPDE PointerPde; + + /* Now loop through the descriptors */ + NextEntry = LoaderBlock->MemoryDescriptorListHead.Flink; + while (NextEntry != &LoaderBlock->MemoryDescriptorListHead) + { + /* Get the current descriptor */ + MdBlock = CONTAINING_RECORD(NextEntry, + MEMORY_ALLOCATION_DESCRIPTOR, + ListEntry); + + /* Read its data */ + PageCount = MdBlock->PageCount; + PageFrameIndex = MdBlock->BasePage; + + /* Don't allow memory above what the PFN database is mapping */ + if (PageFrameIndex > MmHighestPhysicalPage) + { + /* Since they are ordered, everything past here will be larger */ + break; + } + + /* On the other hand, the end page might be higher up... */ + if ((PageFrameIndex + PageCount) > (MmHighestPhysicalPage + 1)) + { + /* In which case we'll trim the descriptor to go as high as we can */ + PageCount = MmHighestPhysicalPage + 1 - PageFrameIndex; + MdBlock->PageCount = PageCount; + + /* But if there's nothing left to trim, we got too high, so quit */ + if (!PageCount) break; + } + + /* Now check the descriptor type */ + switch (MdBlock->MemoryType) + { + /* Check for bad RAM */ + case LoaderBad: + + DPRINT1("You have damaged RAM modules. Stopping boot\n"); + while (TRUE); + break; + + /* Check for free RAM */ + case LoaderFree: + case LoaderLoadedProgram: + case LoaderFirmwareTemporary: + case LoaderOsloaderStack: + + /* Get the last page of this descriptor. Note we loop backwards */ + PageFrameIndex += PageCount - 1; + Pfn1 = MI_PFN_TO_PFNENTRY(PageFrameIndex); + while (PageCount--) + { + /* If the page really has no references, mark it as free */ + if (!Pfn1->u3.e2.ReferenceCount) + { + Pfn1->u3.e1.CacheAttribute = MiNonCached; + MiInsertPageInFreeList(PageFrameIndex); + } + + /* Go to the next page */ + Pfn1--; + PageFrameIndex--; + } + + /* Done with this block */ + break; + + /* Check for pages that are invisible to us */ + case LoaderFirmwarePermanent: + case LoaderSpecialMemory: + case LoaderBBTMemory: + + /* And skip them */ + break; + + default: + + /* Map these pages with the KSEG0 mapping that adds 0x80000000 */ + PointerPte = MiAddressToPte(KSEG0_BASE + (PageFrameIndex << PAGE_SHIFT)); + Pfn1 = MI_PFN_TO_PFNENTRY(PageFrameIndex); + while (PageCount--) + { + /* Check if the page is really unused */ + PointerPde = MiAddressToPde(KSEG0_BASE + (PageFrameIndex << PAGE_SHIFT)); + if (!Pfn1->u3.e2.ReferenceCount) + { + /* Mark it as being in-use */ + Pfn1->u4.PteFrame = PFN_FROM_PTE(PointerPde); + Pfn1->PteAddress = PointerPte; + Pfn1->u2.ShareCount++; + Pfn1->u3.e2.ReferenceCount = 1; + Pfn1->u3.e1.PageLocation = ActiveAndValid; + Pfn1->u3.e1.CacheAttribute = MiNonCached; + + /* Check for RAM disk page */ + if (MdBlock->MemoryType == LoaderXIPRom) + { + /* Make it a pseudo-I/O ROM mapping */ + Pfn1->u1.Flink = 0; + Pfn1->u2.ShareCount = 0; + Pfn1->u3.e2.ReferenceCount = 0; + Pfn1->u3.e1.PageLocation = 0; + Pfn1->u3.e1.Rom = 1; + Pfn1->u4.InPageError = 0; + Pfn1->u3.e1.PrototypePte = 1; + } + } + + /* Advance page structures */ + Pfn1++; + PageFrameIndex++; + PointerPte++; + } + break; + } + + /* Next descriptor entry */ + NextEntry = MdBlock->ListEntry.Flink; + } }
VOID NTAPI MiBuildPfnDatabaseSelf(VOID) { - /* FIXME: TODO */ + PMMPTE PointerPte, LastPte; + PMMPFN Pfn1; + + /* Loop the PFN database page */ + PointerPte = MiAddressToPte(MI_PFN_TO_PFNENTRY(MmLowestPhysicalPage)); + LastPte = MiAddressToPte(MI_PFN_TO_PFNENTRY(MmHighestPhysicalPage)); + while (PointerPte <= LastPte) + { + /* Make sure the page is valid */ + if (PointerPte->u.Hard.Valid == 1) + { + /* Get the PFN entry and just mark it referenced */ + Pfn1 = MI_PFN_TO_PFNENTRY(PointerPte->u.Hard.PageFrameNumber); + Pfn1->u2.ShareCount = 1; + Pfn1->u3.e2.ReferenceCount = 1; + } + + /* Next */ + PointerPte++; + } }
VOID @@ -744,6 +903,69 @@
/* Finally add the pages for the PFN database itself */ MiBuildPfnDatabaseSelf(); +} + +VOID +NTAPI +MmDumpArmPfnDatabase(VOID) +{ + ULONG i; + PMMPFN Pfn1; + PCHAR Consumer = "Unknown"; + KIRQL OldIrql; + ULONG ActivePages = 0, FreePages = 0, OtherPages = 0; + + KeRaiseIrql(HIGH_LEVEL, &OldIrql); + + // + // Loop the PFN database + // + for (i = 0; i <= MmHighestPhysicalPage; i++) + { + Pfn1 = MI_PFN_TO_PFNENTRY(i); + if (!Pfn1) continue; + + // + // Get the page location + // + switch (Pfn1->u3.e1.PageLocation) + { + case ActiveAndValid: + + Consumer = "Active and Valid"; + ActivePages++; + break; + + case FreePageList: + + Consumer = "Free Page List"; + FreePages++; + break; + + default: + + Consumer = "Other (ASSERT!)"; + OtherPages++; + break; + } + + // + // Pretty-print the page + // + DbgPrint("0x%08p:\t%20s\t(%02d.%02d) [%08p-%08p])\n", + i << PAGE_SHIFT, + Consumer, + Pfn1->u3.e2.ReferenceCount, + Pfn1->u2.ShareCount, + Pfn1->PteAddress, + Pfn1->u4.PteFrame); + } + + DbgPrint("Active: %d pages\t[%d KB]\n", ActivePages, (ActivePages << PAGE_SHIFT) / 1024); + DbgPrint("Free: %d pages\t[%d KB]\n", FreePages, (FreePages << PAGE_SHIFT) / 1024); + DbgPrint("Other: %d pages\t[%d KB]\n", OtherPages, (OtherPages << PAGE_SHIFT) / 1024); + + KeLowerIrql(OldIrql); }
PFN_NUMBER
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sir_richard＠svn.reactos.org