Merge pull request CosmosOS#763 from KingLuigi4932/patch-6

[FirstWorking] Implementing AHCI Controller Driver

source/Cosmos.Core/MemoryGroup/AHCI.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Cosmos.Core.MemoryGroup
+{
+    public class AHCI
+    {
+        public MemoryBlock DataBlock;
+
+        public AHCI(uint aSectorSize)
+        {
+            DataBlock = new Core.MemoryBlock(0x0046C000, aSectorSize * 1024);
+            DataBlock.Fill(0);
+        }
+    }
+}

source/Cosmos.HAL2/BlockDevice/IDE.cs

@@ -0,0 +1,80 @@
+using System;
+using Cosmos.HAL.BlockDevice;
+
+namespace Cosmos.HAL.BlockDevice
+{
+    public class IDE
+    {
+        private static PCIDevice xDevice = HAL.PCI.GetDeviceClass(HAL.ClassID.MassStorageController,
+                                                                  HAL.SubclassID.IDEInterface);
+
+        internal static void InitDriver()
+        {
+            if (xDevice != null)
+            {
+                Console.WriteLine("ATA Primary Master");
+                Initialize(Ata.ControllerIdEnum.Primary, Ata.BusPositionEnum.Master);
+                //Console.WriteLine("ATA Primary Slave");
+                //Initialize(Ata.ControllerIdEnum.Primary, Ata.BusPositionEnum.Slave);
+                Console.WriteLine("ATA Secondary Master");
+                Initialize(Ata.ControllerIdEnum.Secondary, Ata.BusPositionEnum.Master);
+                //Console.WriteLine("ATA Secondary Slave");
+                //Initialize(Ata.ControllerIdEnum.Secondary, Ata.BusPositionEnum.Slave);
+            }
+        }
+
+        private static void Initialize(Ata.ControllerIdEnum aControllerID, Ata.BusPositionEnum aBusPosition)
+        {
+            var xIO = aControllerID == Ata.ControllerIdEnum.Primary ? Core.Global.BaseIOGroups.ATA1 : Core.Global.BaseIOGroups.ATA2;
+            var xATA = new AtaPio(xIO, aControllerID, aBusPosition);
+            if (xATA.DriveType == AtaPio.SpecLevel.Null)
+                return;
+            else if (xATA.DriveType == AtaPio.SpecLevel.ATA)
+            {
+                BlockDevice.Devices.Add(xATA);
+                Ata.AtaDebugger.Send("ATA device with speclevel ATA found.");
+            }
+            else if (xATA.DriveType == AtaPio.SpecLevel.ATAPI)
+            {
+                Ata.AtaDebugger.Send("ATA device with speclevel ATAPI found, which is not supported yet!");
+                return;
+            }
+            var xMbrData = new byte[512];
+            xATA.ReadBlock(0UL, 1U, xMbrData);
+            var xMBR = new MBR(xMbrData);
+
+            if (xMBR.EBRLocation != 0)
+            {
+                //EBR Detected
+                var xEbrData = new byte[512];
+                xATA.ReadBlock(xMBR.EBRLocation, 1U, xEbrData);
+                var xEBR = new EBR(xEbrData);
+
+                for (int i = 0; i < xEBR.Partitions.Count; i++)
+                {
+                    //var xPart = xEBR.Partitions[i];
+                    //var xPartDevice = new BlockDevice.Partition(xATA, xPart.StartSector, xPart.SectorCount);
+                    //BlockDevice.BlockDevice.Devices.Add(xPartDevice);
+                }
+            }
+
+            // TODO Change this to foreach when foreach is supported
+            Ata.AtaDebugger.Send("Number of MBR partitions found:");
+            Ata.AtaDebugger.SendNumber(xMBR.Partitions.Count);
+            for(int i = 0; i < xMBR.Partitions.Count; i++)
+            {
+                var xPart = xMBR.Partitions[i];
+                if (xPart == null)
+                {
+                    Console.WriteLine("Null partition found at idx: " + i);
+                }
+                else
+                {
+                    var xPartDevice = new Partition(xATA, xPart.StartSector, xPart.SectorCount);
+                    BlockDevice.Devices.Add(xPartDevice);
+                    Console.WriteLine("Found partition at idx: " + i);
+                }
+            }
+        }
+    }
+}