kernel: storage, modules, mbci: implement mbci_read_auth_key, mbci_test_mmio, test DMA on AHCI too.

- Alongside fixes for BootNet, SysChk, and refactor for KernelScheduler, and
  MemoryMgr.
- IMPORTANT: Add MBCI specs.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

5 files changed, 46 insertions, 18 deletions

diff --git a/dev/modules/CoreGfx/CoreAccess.h b/dev/modules/CoreGfx/CoreAccess.h
index adc9ed33..b3d17a59 100644
--- a/dev/modules/CoreGfx/CoreAccess.h
+++ b/dev/modules/CoreGfx/CoreAccess.h
@@ -4,8 +4,8 @@
 
 ------------------------------------------- */
 
-#ifndef GFX_MGR_ACCESSIBILITY_H
-#define GFX_MGR_ACCESSIBILITY_H
+#ifndef CORE_GFX_ACCESSIBILITY_H
+#define CORE_GFX_ACCESSIBILITY_H
 
 #include <NewKit/NewKit.h>
 #include <KernelKit/KPC.h>
@@ -38,4 +38,4 @@ namespace FB
 	};
 } // namespace FB
 
-#endif // !GFX_MGR_ACCESSIBILITY_H_
+#endif // !CORE_GFX_ACCESSIBILITY_H_
diff --git a/dev/modules/CoreGfx/CoreGfx.h b/dev/modules/CoreGfx/CoreGfx.h
index df22fed0..eda52520 100644
--- a/dev/modules/CoreGfx/CoreGfx.h
+++ b/dev/modules/CoreGfx/CoreGfx.h
@@ -129,15 +129,13 @@
 #define FBDrawInRegionA(clr, height, width, base_x, base_y)
 #endif // __NE_AMD64__
 
-#ifndef GFX_MGR_ACCESSIBILITY_H
+#ifndef CORE_GFX_ACCESSIBILITY_H
 #include <modules/CoreGfx/CoreAccess.h>
-#endif // ifndef GFX_MGR_ACCESSIBILITY_H
+#endif // ifndef CORE_GFX_ACCESSIBILITY_H
 
 namespace FB
 {
-	struct FB_CONTROL_BLOCK;
-
-	inline void fb_clear_video() noexcept
+	inline Void fb_clear_video() noexcept
 	{
 		fb_init();
 
@@ -146,5 +144,4 @@ namespace FB
 
 		fb_clear();
 	}
-
 } // namespace FB
\ No newline at end of file
diff --git a/dev/modules/CoreGfx/MathGfx.h b/dev/modules/CoreGfx/MathGfx.h
index 655903e2..f03e2f19 100644
--- a/dev/modules/CoreGfx/MathGfx.h
+++ b/dev/modules/CoreGfx/MathGfx.h
@@ -11,7 +11,7 @@
 
 namespace UI
 {
-#ifdef NE_GFX_MGR_USE_DOUBLE
+#ifdef NE_CORE_GFX_USE_DOUBLE
 	typedef double fb_real_t;
 #else
 	typedef float fb_real_t;
diff --git a/dev/modules/MBCI/MBCI.h b/dev/modules/MBCI/MBCI.h
index 975fa7fe..ebc73f69 100644
--- a/dev/modules/MBCI/MBCI.h
+++ b/dev/modules/MBCI/MBCI.h
@@ -7,9 +7,13 @@
 #ifndef _INC_MODULE_MBCI_H_
 #define _INC_MODULE_MBCI_H_
 
+#include <hint/CompilerHint.h>
 #include <NewKit/Defines.h>
 #include <modules/ACPI/ACPI.h>
 
+/// @file MBCI.h
+/// @brief Mini Bus Controller Interface.
+
 /**
 - VCC (IN) (OUT for MCU)
 - CLK (IN) (OUT for MCU)
@@ -22,8 +26,9 @@
  */
 
 #define kMBCIZeroSz (8)
+#define kMBCIESBSz	(64)
 
-namespace NeOS
+namespace Kernel
 {
 	struct IMBCIHost;
 
@@ -53,14 +58,15 @@ namespace NeOS
 		UInt64 BaseAddressRegister;
 		UInt64 BaseAddressRegisterSize;
 		UInt32 CommandIssue;
-		Char   Zero[kMBCIZeroSz];
+		UInt8  Esb[kMBCIESBSz]; // Extended Signature Block
+		UInt8  Zero[kMBCIZeroSz];
 	};
 
 	/// @brief MBCI host flags.
 	enum MBCIHostFlags
 	{
 		kMBCIHostFlagsSupportsNothing,		// Invalid MBCI device.
-		kMBCIHostFlagsSupportsAPM,			// Advanced Power Management.
+		kMBCIHostFlagsSupportsAPM,			// FW's Advanced Power Management.
 		kMBCIHostFlagsSupportsDaisyChain,	// Is daisy chained.
 		kMBCIHostFlagsSupportsHWInterrupts, // Has HW interrupts.
 		kMBCIHostFlagsSupportsDMA,			// Has DMA.
@@ -93,8 +99,33 @@ namespace NeOS
 		kMBCIHostStateCount,
 	};
 
-	/// @brief An AuthKey is a context used to decrpy data from an MBCI packet.
-	typedef UInt64 MBCIAuthKeyType;
-} // namespace NeOS
+	/// @brief An AuthKey is a context used to tokenize data for an MBCI packet.
+	typedef UInt32 MBCIAuthKeyType;
+
+	/// @brief Read Auth key for MBCI host.
+	/// @param host the mbci host to get the key on.
+	/// @return the 24-bit key.
+	inline MBCIAuthKeyType mbci_read_auth_key(_Input volatile struct IMBCIHost* host)
+	{
+		constexpr auto const kChallengeMBCI = 0xdeadbeef;
+
+		host->MMIOTest = kChallengeMBCI;
+
+		if (host->MMIOTest == kChallengeMBCI)
+		{
+			return (host->Esb[kMBCIESBSz - 1] << 16) | (host->Esb[kMBCIESBSz - 2] << 8) | (host->Esb[kMBCIESBSz - 3] & 0xFF);
+		}
+
+		return kChallengeMBCI;
+	}
+
+	inline BOOL mbci_test_mmio(_Input volatile struct IMBCIHost* host)
+	{
+		constexpr auto const kChallengeMBCI = 0xdeadbeef;
+
+		host->MMIOTest = kChallengeMBCI;
+		return host->MMIOTest == kChallengeMBCI;
+	}
+} // namespace Kernel
 
 #endif // ifndef _INC_MODULE_MBCI_H_
\ No newline at end of file
diff --git a/dev/modules/NVME/NVME.h b/dev/modules/NVME/NVME.h
index 42edd149..f58aacf9 100644
--- a/dev/modules/NVME/NVME.h
+++ b/dev/modules/NVME/NVME.h
@@ -15,7 +15,7 @@
 #include <NewKit/Defines.h>
 
 /// @file NVME.h
-/// @brief NVME driver.
+/// @brief Non Volatile Memory.
 
 #define NE_ALIGN_NVME ATTRIBUTE(aligned(sizeof(Kernel::UInt32)))
 
@@ -46,7 +46,7 @@ namespace Kernel
 
 	enum
 	{
-		kInvalidNVME,
+		kInvalidNVME			   = 0xFF,
 		kCreateCompletionQueueNVME = 0x05,
 		kCreateSubmissionQueueNVME = 0x01,
 		kIdentifyNVME			   = 0x06,