REWORK: Reworking Paging API on AMD64.

Signed-off-by: Amlal <amlal@el-mahrouss-logic.com>

1 files changed, 115 insertions, 0 deletions

diff --git a/dev/ZKA/HALKit/AMD64/HalCommAPI.cxx b/dev/ZKA/HALKit/AMD64/HalCommAPI.cxx
new file mode 100644
index 00000000..ff313f47
--- /dev/null
+++ b/dev/ZKA/HALKit/AMD64/HalCommAPI.cxx
@@ -0,0 +1,115 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+	File: HalProcessor.cxx
+	Purpose: Platform processor routines.
+
+------------------------------------------- */
+
+#include <HALKit/AMD64/Processor.hxx>
+
+/**
+ * @file HalProcessorMgr.cxx
+ * @brief CPU Processor managers.
+ */
+
+#define cPageSz		kPageSize				// 4KB pages
+#define cTotalPgMem gib_cast(16)			// 16MB total memory
+#define cTotalPages (cTotalPgMem / cPageSz) // Total number of pages
+#define cBmpPgSz	(cTotalPages / 8)		// 1 bit per page in the bitmap
+
+namespace Kernel::HAL
+{
+	/// @brief Maps or allocates a page from virt_addr.
+	/// @param virt_addr a valid virtual address.
+	/// @param phys_addr point to physical address.
+	/// @param flags the flags to put on the page.
+	/// @return Status code of page manip.
+	EXTERN_C Int32 mm_map_page(VoidPtr virt_addr, UInt32 flags)
+	{
+		return 0;
+	}
+
+	Void Out8(UInt16 port, UInt8 value)
+	{
+		asm volatile("outb %%al, %1"
+					 :
+					 : "a"(value), "Nd"(port)
+					 : "memory");
+	}
+
+	Void Out16(UInt16 port, UInt16 value)
+	{
+		asm volatile("outw %%ax, %1"
+					 :
+					 : "a"(value), "Nd"(port)
+					 : "memory");
+	}
+
+	Void Out32(UInt16 port, UInt32 value)
+	{
+		asm volatile("outl %%eax, %1"
+					 :
+					 : "a"(value), "Nd"(port)
+					 : "memory");
+	}
+
+	UInt8 In8(UInt16 port)
+	{
+		UInt8 value = 0UL;
+		asm volatile("inb %1, %%al"
+					 : "=a"(value)
+					 : "Nd"(port)
+					 : "memory");
+
+		return value;
+	}
+
+	UInt16 In16(UInt16 port)
+	{
+		UInt16 value = 0UL;
+		asm volatile("inw %1, %%ax"
+					 : "=a"(value)
+					 : "Nd"(port)
+					 : "memory");
+
+		return value;
+	}
+
+	UInt32 In32(UInt16 port)
+	{
+		UInt32 value = 0UL;
+		asm volatile("inl %1, %%eax"
+					 : "=a"(value)
+					 : "Nd"(port)
+					 : "memory");
+
+		return value;
+	}
+
+	Void rt_halt()
+	{
+		asm volatile("hlt");
+	}
+
+	Void rt_cli()
+	{
+		asm volatile("cli");
+	}
+
+	Void rt_sti()
+	{
+		asm volatile("sti");
+	}
+
+	Void rt_cld()
+	{
+		asm volatile("cld");
+	}
+
+	Void rt_std()
+	{
+		asm volatile("std");
+	}
+} // namespace Kernel::HAL