Restructured and rewritten entire codebase

modules/AdvancedMicroDevices/PCNET.cpp

@@ -0,0 +1,131 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include "pcnet.hpp"
+
+#include <net/net.hpp>
+#include <debug.h>
+#include <pci.hpp>
+#include <io.h>
+
+#include "../../mapi.hpp"
+#include "../mod.hpp"
+
+using namespace PCI;
+
+namespace PCNET
+{
+	KernelAPI KAPI;
+
+	PCIDeviceHeader *PCIBaseAddress;
+	BARData BAR;
+
+	MediaAccessControl MAC;
+	InternetProtocol::Version4 IP;
+
+	void WriteRAP32(uint32_t Value) { outportl(BAR.IOBase + 0x14, Value); }
+	void WriteRAP16(uint16_t Value) { outportw(BAR.IOBase + 0x12, Value); }
+
+	uint32_t ReadCSR32(uint32_t CSR)
+	{
+		WriteRAP32(CSR);
+		return inportl(BAR.IOBase + 0x10);
+	}
+
+	uint16_t ReadCSR16(uint16_t CSR)
+	{
+		WriteRAP32(CSR);
+		return inportw(BAR.IOBase + 0x10);
+	}
+
+	void WriteCSR32(uint32_t CSR, uint32_t Value)
+	{
+		WriteRAP32(CSR);
+		outportl(BAR.IOBase + 0x10, Value);
+	}
+
+	void WriteCSR16(uint16_t CSR, uint16_t Value)
+	{
+		WriteRAP16(CSR);
+		outportw(BAR.IOBase + 0x10, Value);
+	}
+
+	int DriverEntry(void *Data)
+	{
+		if (!Data)
+			return INVALID_KERNEL_API;
+		KAPI = *(KernelAPI *)Data;
+		if (KAPI.Version.Major < 0 || KAPI.Version.Minor < 0 || KAPI.Version.Patch < 0)
+			return KERNEL_API_VERSION_NOT_SUPPORTED;
+		return OK;
+	}
+
+	int CallbackHandler(KernelCallback *Data)
+	{
+		switch (Data->Reason)
+		{
+		case AcknowledgeReason:
+		{
+			debug("Kernel acknowledged the driver.");
+			break;
+		}
+		case ConfigurationReason:
+		{
+			debug("Module received configuration data.");
+			PCIBaseAddress = reinterpret_cast<PCIDeviceHeader *>(Data->RawPtr);
+			if (PCIBaseAddress->VendorID == 0x1022 && PCIBaseAddress->DeviceID == 0x2000)
+			{
+				trace("Found AMD PCNET.");
+				uint32_t PCIBAR = ((PCIHeader0 *)PCIBaseAddress)->BAR0;
+				BAR.Type = PCIBAR & 1;
+				BAR.IOBase = (uint16_t)(PCIBAR & (~3));
+				BAR.MemoryBase = PCIBAR & (~15);
+			}
+			else
+				return DEVICE_NOT_SUPPORTED;
+			break;
+		}
+		case QueryReason:
+		{
+			memcpy(Data->NetworkCallback.Fetch.Name, (void *)"AMD PCNET", 10);
+			Data->NetworkCallback.Fetch.MAC = MAC.ToHex();
+			break;
+		}
+		case SendReason:
+		{
+			break;
+		}
+		case StopReason:
+		{
+			// TODO: Stop the driver.
+			debug("Module stopped.");
+			break;
+		}
+		default:
+		{
+			warn("Unknown reason.");
+			break;
+		}
+		}
+		return OK;
+	}
+
+	int InterruptCallback(CPURegisters *)
+	{
+		return OK;
+	}
+}