/// <inheritdoc/>
protected override KernelResult Unmap(ulong address, ulong pagesCount)
{
KPageList pagesToClose = new KPageList();
var regions = _cpuMemory.GetPhysicalRegions(address, pagesCount * PageSize);
foreach (var region in regions)
{
ulong pa = GetDramAddressFromHostAddress(region.Address);
if (pa == ulong.MaxValue)
{
continue;
}
pa += DramMemoryMap.DramBase;
if (DramMemoryMap.IsHeapPhysicalAddress(pa))
{
pagesToClose.AddRange(pa, region.Size / PageSize);
}
}
_cpuMemory.Unmap(address, pagesCount * PageSize);
pagesToClose.DecrementPagesReferenceCount(Context.MemoryManager);
return(KernelResult.Success);
}
/// <inheritdoc/>
public override KernelResult MapPages(ulong address, IEnumerable <HostMemoryRange> ranges, KMemoryPermission permission)
{
ulong currentVa = address;
foreach (var range in ranges)
{
ulong size = range.Size;
ulong pa = GetDramAddressFromHostAddress(range.Address);
if (pa != ulong.MaxValue)
{
pa += DramMemoryMap.DramBase;
if (DramMemoryMap.IsHeapPhysicalAddress(pa))
{
Context.MemoryManager.IncrementPagesReferenceCount(pa, size / PageSize);
}
}
_cpuMemory.Map(currentVa, range.Address, size);
currentVa += size;
}
return(KernelResult.Success);
}
/// <inheritdoc/>
protected override KernelResult MapPages(ulong dstVa, ulong pagesCount, ulong srcPa, KMemoryPermission permission)
{
ulong size = pagesCount * PageSize;
Context.Memory.Commit(srcPa - DramMemoryMap.DramBase, size);
_cpuMemory.Map(dstVa, Context.Memory.GetPointer(srcPa - DramMemoryMap.DramBase, size), size);
if (DramMemoryMap.IsHeapPhysicalAddress(srcPa))
{
Context.MemoryManager.IncrementPagesReferenceCount(srcPa, pagesCount);
}
return(KernelResult.Success);
}
/// <inheritdoc/>
protected override KernelResult MapPages(ulong dstVa, ulong pagesCount, ulong srcPa, KMemoryPermission permission, bool shouldFillPages, byte fillValue)
{
ulong size = pagesCount * PageSize;
Context.Memory.Commit(srcPa - DramMemoryMap.DramBase, size);
_cpuMemory.Map(dstVa, srcPa - DramMemoryMap.DramBase, size);
if (DramMemoryMap.IsHeapPhysicalAddress(srcPa))
{
Context.MemoryManager.IncrementPagesReferenceCount(srcPa, pagesCount);
}
if (shouldFillPages)
{
_cpuMemory.Fill(dstVa, size, fillValue);
}
return(KernelResult.Success);
}
