PVOID NTAPI MiDbgTranslatePhysicalAddress	(	IN ULONG64	PhysicalAddress,
		IN ULONG	Flags
	)
Definition at line 43 of file mmdbg.c.
Referenced by MmDbgCopyMemory().
{
    PFN_NUMBER Pfn;
    MMPTE TempPte;
    PVOID MappingBaseAddress;

    //
    // Check if we are called too early
    //
    if (MmDebugPte == NULL)
    {
        //
        // The structures we require aren't initialized yet, fail
        //
        KdpDprintf("MiDbgTranslatePhysicalAddress called too early! "
                   "Address: 0x%I64x\n", PhysicalAddress);
        return NULL;
    }

    //
    // FIXME: No support for cache flags yet
    //
    if ((Flags & (MMDBG_COPY_CACHED |
                  MMDBG_COPY_UNCACHED |
                  MMDBG_COPY_WRITE_COMBINED)) != 0)
    {
        //
        // Fail
        //
        KdpDprintf("MiDbgTranslatePhysicalAddress: Cache Flags not yet supported. "
                   "Flags: 0x%lx\n", Flags & (MMDBG_COPY_CACHED |
                                              MMDBG_COPY_UNCACHED |
                                              MMDBG_COPY_WRITE_COMBINED));
        return NULL;
    }

    //
    // Save the base address of our mapping page
    //
    MappingBaseAddress = MiPteToAddress(MmDebugPte);

    //
    // Get the template
    //
    TempPte = ValidKernelPte;

    //
    // Convert physical address to PFN
    //
    Pfn = (PFN_NUMBER)(PhysicalAddress >> PAGE_SHIFT);

    /* Check if this could be an I/O mapping */
    if (!MiGetPfnEntry(Pfn))
    {
        //
        // FIXME: We don't support this yet
        //
        KdpDprintf("MiDbgTranslatePhysicalAddress: I/O Space not yet supported. "
                   "PFN: 0x%I64x\n", (ULONG64)Pfn);
        return NULL;
    }
    else
    {
        //
        // Set the PFN in the PTE
        //
        TempPte.u.Hard.PageFrameNumber = Pfn;
    }

    //
    // Map the PTE and invalidate its TLB entry
    //
    *MmDebugPte = TempPte;
    KeInvalidateTlbEntry(MappingBaseAddress);

    //
    // Calculate and return the virtual offset into our mapping page
    //
    return (PVOID)((ULONG_PTR)MappingBaseAddress +
                    BYTE_OFFSET(PhysicalAddress));
}
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