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