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/* -------------------------------------------
Copyright SoftwareLabs
------------------------------------------- */
#include <KernelKit/DebugOutput.hpp>
#include <NewKit/Pmm.hpp>
namespace NewOS
{
/// @brief Pmm constructor.
Pmm::Pmm()
: fPageManager()
{
kcout << "[PMM] Allocate PageMemoryManager";
}
Pmm::~Pmm() = default;
/* If this returns Null pointer, enter emergency mode */
/// @param user is this a user page?
/// @param readWrite is it r/w?
Ref<PTEWrapper> Pmm::RequestPage(Boolean user, Boolean readWrite)
{
PTEWrapper pt = fPageManager.Leak().Request(user, readWrite, false, kPTESize);
if (pt.fPresent)
{
kcout << "[PMM]: Allocation was successful.\r";
return Ref<PTEWrapper>(pt);
}
kcout << "[PMM]: Allocation failed.\r";
return {};
}
Boolean Pmm::FreePage(Ref<PTEWrapper> PageRef)
{
if (!PageRef)
return false;
PageRef.Leak().fPresent = false;
return true;
}
Boolean Pmm::TogglePresent(Ref<PTEWrapper> PageRef, Boolean Enable)
{
if (!PageRef)
return false;
PageRef.Leak().fPresent = Enable;
return true;
}
Boolean Pmm::ToggleUser(Ref<PTEWrapper> PageRef, Boolean Enable)
{
if (!PageRef)
return false;
PageRef.Leak().fRw = Enable;
return true;
}
Boolean Pmm::ToggleRw(Ref<PTEWrapper> PageRef, Boolean Enable)
{
if (!PageRef)
return false;
PageRef.Leak().fRw = Enable;
return true;
}
Boolean Pmm::ToggleShare(Ref<PTEWrapper> PageRef, Boolean Enable)
{
if (!PageRef)
return false;
PageRef.Leak().fShareable = Enable;
return true;
}
} // namespace NewOS
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