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Added AHCI driver stub

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Alex
2022-11-01 04:00:29 +02:00
parent ef3ad03d61
commit 4a3a7f1827
5 changed files with 232 additions and 1 deletions
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83
Disk/AHCI/AHCI.cpp Normal file
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#include <netools.h>
#include <pci.h>
#include <io.h>
#include "../../../Kernel/DAPI.hpp"
#include "../../../Kernel/Fex.hpp"
extern "C" int DriverEntry(KernelAPI *Data);
int CallbackHandler(KernelCallback *Data);
HEAD(FexFormatType_Driver, FexOSType_Fennix, DriverEntry);
#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
__attribute__((section(".extended"))) FexExtended ExtendedHeader = {
.Driver = {
.Name = "AHCI",
.Type = FexDriverType_Storage,
.Callback = CallbackHandler,
.Bind = {
.Type = BIND_PCI,
.PCI = {
.VendorID = {0x8086, 0x15AD},
.DeviceID = {0x2922, 0x2829, 0x07E0},
.Class = 0x1,
.SubClass = 0x6,
.ProgIF = 0x1,
}}}};
KernelAPI *KAPI;
/* --------------------------------------------------------------------------------------------------------- */
struct BARData
{
uint8_t Type;
uint64_t IOBase;
uint64_t MemoryBase;
};
PCIDeviceHeader *PCIBaseAddress;
int DriverEntry(KernelAPI *Data)
{
if (!Data)
return INVALID_KERNEL_API;
if (Data->Version.Major < 0 || Data->Version.Minor < 0 || Data->Version.Patch < 0)
return KERNEL_API_VERSION_NOT_SUPPORTED;
KAPI = Data;
return OK;
}
int CallbackHandler(KernelCallback *Data)
{
switch (Data->Reason)
{
case AcknowledgeReason:
{
KAPI->Util.DebugPrint(((char *)"Kernel acknowledged the driver." + KAPI->Info.Offset), KAPI->Info.DriverUID);
break;
}
case ConfigurationReason:
{
KAPI->Util.DebugPrint(((char *)"Kernel received configuration data." + KAPI->Info.Offset), KAPI->Info.DriverUID);
PCIBaseAddress = reinterpret_cast<PCIDeviceHeader *>(Data->RawPtr);
break;
}
case InterruptReason:
{
break;
}
case SendReason:
{
break;
}
default:
{
KAPI->Util.DebugPrint(((char *)"Unknown reason." + KAPI->Info.Offset), KAPI->Info.DriverUID);
break;
}
}
return OK;
}