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, 41 insertions, 0 deletions

diff --git a/Kernel/ArchKit/ArchKit.hpp b/Kernel/ArchKit/ArchKit.hpp
index 83770272..fa899984 100644
--- a/Kernel/ArchKit/ArchKit.hpp
+++ b/Kernel/ArchKit/ArchKit.hpp
@@ -34,6 +34,47 @@ namespace NewOS
 
 		return hash;
 	}
+
+	/// @brief write to mapped memory register
+	/// @param base the base address.
+	/// @param reg the register.
+	/// @param value the write to write on it.
+	inline void ke_dma_write(UInt32 base, UInt32 reg, UInt32 value) noexcept
+	{
+		*(volatile UInt32*)((UInt64)base + reg) = value;
+	}
+
+	/// @brief read from mapped memory register.
+	/// @param base base address
+	/// @param reg the register.
+	/// @return the value inside the register.
+	inline UInt32 ke_dma_read(UInt32 base, UInt32 reg) noexcept
+	{
+		return *(volatile UInt32*)((UInt64)base + reg);
+	}
+
+	/// @brief Print a region of memory.
+	/// @param start
+	/// @param length
+	inline void ke_print_raw_memory(const void* start, Size length)
+	{
+		const UInt8* ptr = (const UInt8*)start;
+		for (Size i = 0; i < length; i++)
+		{
+			if (i % 16 == 0)
+			{
+				kcout << hex_number((UIntPtr)ptr + i);
+			}
+			else
+			{
+				kcout << hex_number(ptr[i]);
+			}
+
+			kcout << " ";
+		}
+
+		kcout << "\r";
+	}
 } // namespace NewOS
 
 #define kKernelMaxSystemCalls (256)