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Added drivers

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This commit is contained in:
Alex
2022-11-01 02:01:47 +02:00
parent 417eeca40b
commit 8dbabcbde6
23 changed files with 2134 additions and 1 deletions
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73
Generic/ExampleDriver/Example.cpp Normal file
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#include "../../../Kernel/DAPI.hpp"
#include "../../../Kernel/Fex.hpp"
extern "C" int DriverEntry(KernelAPI *Data);
int CallbackHandler(KernelCallback *Data);
/* The driver is
* This is a driver for Fennix Driver Entry Extended Header
* * * * */
HEAD(FexFormatType_Driver, FexOSType_Fennix, DriverEntry);
// Ignore the warning about missing field initializers
#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
// Extended header which is used to give additional information to the kernel
__attribute__((section(".extended"))) FexExtended ExtendedHeader = {
.Driver = {
.Name = "Example Driver",
.Type = FexDriverType_Generic,
.Callback = CallbackHandler,
.Bind = {
.Type = BIND_INTERRUPT,
.Interrupt = {
.Vector = 0xFE,
}}}};
// Global variable that holds the kernel API
KernelAPI *KAPI;
/* --------------------------------------------------------------------------------------------------------- */
// Driver entry point. This is called at initialization. "Data" argument points to the kernel API structure.
int DriverEntry(KernelAPI *Data)
{
// Check if kernel API is valid
if (!Data)
return INVALID_KERNEL_API;
// // Check if kernel API version is valid. this is important because the kernel API may change in the future.
if (Data->Version.Major < 0 || Data->Version.Minor < 0 || Data->Version.Patch < 0)
return KERNEL_API_VERSION_NOT_SUPPORTED;
// Set the global variable to the kernel API
KAPI = Data;
// We print "Hello World!" to UART.
KAPI->Util.DebugPrint(((char *)"Hello World!" + KAPI->Info.Offset), KAPI->Info.DriverUID);
return OK;
}
// This is called when the driver is bound to an interrupt, process, or PCI device or when the kernel wants to send a message to the driver.
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 InterruptReason:
{
KAPI->Util.DebugPrint(((char *)"Interrupt received." + KAPI->Info.Offset), KAPI->Info.DriverUID);
break;
}
default:
{
KAPI->Util.DebugPrint(((char *)"Unknown reason." + KAPI->Info.Offset), KAPI->Info.DriverUID);
break;
}
}
return OK;
}