MHR-23: SMP: Add hal_send_start_ipi and hal_send_end_ipi, as well as

DMA utilities.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>

1 files changed, 26 insertions, 1 deletions

diff --git a/Kernel/Sources/KernelHeap.cxx b/Kernel/Sources/KernelHeap.cxx
index a8ca467e..93f0c164 100644
--- a/Kernel/Sources/KernelHeap.cxx
+++ b/Kernel/Sources/KernelHeap.cxx
@@ -38,7 +38,10 @@ namespace NewOS
 			SizeT fTargetPtrSize;
 			/// @brief 64-bit target pointer.
 			UIntPtr fTargetPtr;
-			UInt8	fPadding[kKernelHeapHeaderPaddingSz];
+			/// @brief Is this a page pointer?
+			Boolean fPagePtr;
+			/// @brief Padding bytes for header.
+			UInt8 fPadding[kKernelHeapHeaderPaddingSz];
 		};
 
 		typedef HeapInformationBlock* HeapInformationBlockPtr;
@@ -64,6 +67,7 @@ namespace NewOS
 		heapInfo->fMagic		 = kKernelHeapMagic;
 		heapInfo->fCRC32		 = 0; // dont fill it for now.
 		heapInfo->fTargetPtr	 = wrapper.VirtualAddress();
+		heapInfo->fPagePtr		 = 0;
 
 		++kHeapCount;
 
@@ -71,6 +75,27 @@ namespace NewOS
 										 sizeof(Detail::HeapInformationBlock));
 	}
 
+	/// @brief Makes a page heap.
+	/// @param heapPtr 
+	/// @return 
+	Int32 ke_make_ke_page(VoidPtr heapPtr)
+	{
+		if (kHeapCount < 1)
+			return -kErrorInternal;
+		if (((IntPtr)heapPtr - sizeof(Detail::HeapInformationBlock)) <= 0)
+			return -kErrorInternal;
+		if (((IntPtr)heapPtr - kBadPtr) < 0)
+			return -kErrorInternal;
+
+		Detail::HeapInformationBlockPtr virtualAddress =
+			reinterpret_cast<Detail::HeapInformationBlockPtr>(
+				(UIntPtr)heapPtr - sizeof(Detail::HeapInformationBlock));
+
+		virtualAddress->fPagePtr = 1;
+
+		return 0;
+	}
+
 	/// @brief Declare pointer as free.
 	/// @param heapPtr the pointer.
 	/// @return