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Kernel/Core/Driver/Driver.cpp

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#include <driver.hpp>
#include <memory.hpp>
#include <ints.hpp>
#include <task.hpp>
#include <lock.hpp>
#include <printf.h>
#include <cwalk.h>
#include <md5.h>
// #include <ini.h>
#include "../../kernel.h"
#include "../../DAPI.hpp"
#include "../../Fex.hpp"
#include "api.hpp"
NewLock(DriverInitLock);
NewLock(DriverInterruptLock);
namespace Driver
{
const char *DriverTypesName[] = {
"Unknown",
"Generic",
"Display",
"Network",
"Storage",
"FileSystem",
"Input",
"Audio"};
void Driver::UnloadAllDrivers()
{
size_t DriversNum = Drivers.size();
debug("%ld drivers loaded, [DUIDs: %ld]", DriversNum, DriverUIDs);
debug("driver size %ld", DriversNum);
for (size_t i = 0; i < DriversNum; i++)
{
DriverFile drv = Drivers[i];
KernelCallback callback;
callback.Reason = StopReason;
debug("Stopping & unloading driver %ld [%#lx]", drv.DriverUID, drv.Address);
DriverManager->IOCB(drv.DriverUID, (void *)&callback);
for (size_t j = 0; j < sizeof(drv.InterruptHook) / sizeof(drv.InterruptHook[0]); j++)
{
if (!drv.InterruptHook[j])
continue;
delete drv.InterruptHook[j], drv.InterruptHook[j] = nullptr;
}
if (drv.MemTrk)
delete drv.MemTrk, drv.MemTrk = nullptr;
Drivers.remove(i);
}
}
bool Driver::UnloadDriver(unsigned long DUID)
{
debug("Searching for driver %ld", DUID);
for (size_t i = 0; i < Drivers.size(); i++)
{
DriverFile drv = Drivers[i];
if (drv.DriverUID == DUID)
{
KernelCallback callback;
callback.Reason = StopReason;
debug("Stopping and unloading driver %ld [%#lx]", drv.DriverUID, drv.Address);
this->IOCB(drv.DriverUID, (void *)&callback);
for (size_t i = 0; i < sizeof(drv.InterruptHook) / sizeof(drv.InterruptHook[0]); i++)
{
if (!drv.InterruptHook[i])
continue;
delete drv.InterruptHook[i], drv.InterruptHook[i] = nullptr;
}
delete drv.MemTrk, drv.MemTrk = nullptr;
Drivers.remove(i);
return true;
}
}
return false;
}
int Driver::IOCB(unsigned long DUID, void *KCB)
{
foreach (auto Drv in Drivers)
{
if (Drv.DriverUID == DUID)
{
FexExtended *DrvExtHdr = (FexExtended *)((uintptr_t)Drv.Address + EXTENDED_SECTION_ADDRESS);
int ret = ((int (*)(void *))((uintptr_t)DrvExtHdr->Driver.Callback + (uintptr_t)Drv.Address))(KCB);
__sync;
return ret;
}
}
return -1;
}
DriverCode Driver::CallDriverEntryPoint(void *fex, void *KAPIAddress)
{
memcpy(KAPIAddress, &KernelAPITemplate, sizeof(KernelAPI));
((KernelAPI *)KAPIAddress)->Info.Offset = (unsigned long)fex;
((KernelAPI *)KAPIAddress)->Info.DriverUID = DriverUIDs++;
#ifdef DEBUG
FexExtended *fexExtended = (FexExtended *)((uintptr_t)fex + EXTENDED_SECTION_ADDRESS);
debug("DRIVER: %s HAS DRIVER ID %ld", fexExtended->Driver.Name, ((KernelAPI *)KAPIAddress)->Info.DriverUID);
#endif
debug("Calling driver entry point ( %#lx %ld )", (unsigned long)fex, ((KernelAPI *)KAPIAddress)->Info.DriverUID);
int ret = ((int (*)(KernelAPI *))((uintptr_t)((Fex *)fex)->EntryPoint + (uintptr_t)fex))(((KernelAPI *)KAPIAddress));
if (DriverReturnCode::OK != ret)
return DriverCode::DRIVER_RETURNED_ERROR;
return DriverCode::OK;
}
DriverCode Driver::LoadDriver(uintptr_t DriverAddress, uintptr_t Size)
{
Fex *DrvHdr = (Fex *)DriverAddress;
if (DrvHdr->Magic[0] != 'F' || DrvHdr->Magic[1] != 'E' || DrvHdr->Magic[2] != 'X' || DrvHdr->Magic[3] != '\0')
{
if (Size > 0x1000)
{
Fex *ElfDrvHdr = (Fex *)(DriverAddress + 0x1000);
if (ElfDrvHdr->Magic[0] != 'F' || ElfDrvHdr->Magic[1] != 'E' || ElfDrvHdr->Magic[2] != 'X' || ElfDrvHdr->Magic[3] != '\0')
return DriverCode::INVALID_FEX_HEADER;
else
{
debug("Fex Magic: \"%s\"; Type: %d; OS: %d; EntryPoint: %#lx", ElfDrvHdr->Magic, ElfDrvHdr->Type, ElfDrvHdr->OS, ElfDrvHdr->EntryPoint);
if (ElfDrvHdr->Type == FexFormatType::FexFormatType_Driver)
{
FexExtended *ElfDrvExtHdr = (FexExtended *)((uintptr_t)ElfDrvHdr + EXTENDED_SECTION_ADDRESS);
debug("Name: \"%s\"; Type: %d; Callback: %#lx", ElfDrvExtHdr->Driver.Name, ElfDrvExtHdr->Driver.Type, ElfDrvExtHdr->Driver.Callback);
if (ElfDrvExtHdr->Driver.Bind.Type == DriverBindType::BIND_PCI)
return this->DriverLoadBindPCI(ElfDrvExtHdr, DriverAddress, Size, true);
else if (ElfDrvExtHdr->Driver.Bind.Type == DriverBindType::BIND_INTERRUPT)
return this->DriverLoadBindInterrupt(ElfDrvExtHdr, DriverAddress, Size, true);
else if (ElfDrvExtHdr->Driver.Bind.Type == DriverBindType::BIND_PROCESS)
return this->DriverLoadBindProcess(ElfDrvExtHdr, DriverAddress, Size, true);
else if (ElfDrvExtHdr->Driver.Bind.Type == DriverBindType::BIND_INPUT)
return this->DriverLoadBindInput(ElfDrvExtHdr, DriverAddress, Size, true);
else
error("Unknown driver bind type: %d", ElfDrvExtHdr->Driver.Bind.Type);
}
else
return DriverCode::NOT_DRIVER;
}
}
else
return DriverCode::INVALID_FEX_HEADER;
}
debug("Fex Magic: \"%s\"; Type: %d; OS: %d; EntryPoint: %#lx", DrvHdr->Magic, DrvHdr->Type, DrvHdr->OS, DrvHdr->EntryPoint);
if (DrvHdr->Type == FexFormatType::FexFormatType_Driver)
{
FexExtended *DrvExtHdr = (FexExtended *)((uintptr_t)DrvHdr + EXTENDED_SECTION_ADDRESS);
debug("Name: \"%s\"; Type: %d; Callback: %#lx", DrvExtHdr->Driver.Name, DrvExtHdr->Driver.Type, DrvExtHdr->Driver.Callback);
if (DrvExtHdr->Driver.Bind.Type == DriverBindType::BIND_PCI)
return this->DriverLoadBindPCI(DrvExtHdr, DriverAddress, Size);
else if (DrvExtHdr->Driver.Bind.Type == DriverBindType::BIND_INTERRUPT)
return this->DriverLoadBindInterrupt(DrvExtHdr, DriverAddress, Size);
else if (DrvExtHdr->Driver.Bind.Type == DriverBindType::BIND_PROCESS)
return this->DriverLoadBindProcess(DrvExtHdr, DriverAddress, Size);
else if (DrvExtHdr->Driver.Bind.Type == DriverBindType::BIND_INPUT)
return this->DriverLoadBindInput(DrvExtHdr, DriverAddress, Size);
else
error("Unknown driver bind type: %d", DrvExtHdr->Driver.Bind.Type);
}
else
return DriverCode::NOT_DRIVER;
return DriverCode::ERROR;
}
Driver::Driver()
{
SmartCriticalSection(DriverInitLock);
std::string DriverConfigFile = Config.DriverDirectory;
DriverConfigFile << "/config.ini";
fixme("Loading driver config file: %s", DriverConfigFile.c_str());
std::shared_ptr<VirtualFileSystem::File> DriverDirectory = vfs->Open(Config.DriverDirectory);
if (DriverDirectory->Status == VirtualFileSystem::FileStatus::OK)
{
foreach (auto driver in DriverDirectory->node->Children)
if (driver->Flags == VirtualFileSystem::NodeFlags::FILE)
if (cwk_path_has_extension(driver->Name))
{
const char *extension;
size_t extension_length;
cwk_path_get_extension(driver->Name, &extension, &extension_length);
debug("Driver: %s; Extension: %s", driver->Name, extension);
if (strcmp(extension, ".fex") == 0 || strcmp(extension, ".elf") == 0)
{
uintptr_t ret = this->LoadDriver(driver->Address, driver->Length);
char RetString[128];
if (ret == DriverCode::OK)
strncpy(RetString, "\e058C19OK", 10);
else if (ret == DriverCode::NOT_AVAILABLE)
strncpy(RetString, "\eFF7900NOT AVAILABLE", 21);
else
sprintf(RetString, "\eE85230FAILED (%#lx)", ret);
KPrint("%s %s", driver->Name, RetString);
}
}
}
else
{
KPrint("\eE85230Failed to open driver directory: %s! (Status: %#lx)", Config.DriverDirectory, DriverDirectory->Status);
CPU::Stop();
}
vfs->Close(DriverDirectory);
}
Driver::~Driver()
{
debug("Destructor called");
this->UnloadAllDrivers();
}
#if defined(a64)
SafeFunction void DriverInterruptHook::OnInterruptReceived(CPU::x64::TrapFrame *Frame)
#elif defined(a32)
SafeFunction void DriverInterruptHook::OnInterruptReceived(CPU::x32::TrapFrame *Frame)
#elif defined(aa64)
SafeFunction void DriverInterruptHook::OnInterruptReceived(void *Frame)
#endif
{
SmartLock(DriverInterruptLock); /* Lock in case of multiple interrupts firing at the same time */
if (!Handle.InterruptCallback)
{
#if defined(a64) || defined(a32)
int IntNum = Frame->InterruptNumber - 32;
#elif defined(aa64)
int IntNum = Frame->InterruptNumber;
#endif
warn("Interrupt callback for %ld is not set for driver %ld!", IntNum, Handle.DriverUID);
return;
}
CPURegisters regs;
#if defined(a64)
regs.r15 = Frame->r15;
regs.r14 = Frame->r14;
regs.r13 = Frame->r13;
regs.r12 = Frame->r12;
regs.r11 = Frame->r11;
regs.r10 = Frame->r10;
regs.r9 = Frame->r9;
regs.r8 = Frame->r8;
regs.rbp = Frame->rbp;
regs.rdi = Frame->rdi;
regs.rsi = Frame->rsi;
regs.rdx = Frame->rdx;
regs.rcx = Frame->rcx;
regs.rbx = Frame->rbx;
regs.rax = Frame->rax;
regs.InterruptNumber = Frame->InterruptNumber;
regs.ErrorCode = Frame->ErrorCode;
regs.rip = Frame->rip;
regs.cs = Frame->cs;
regs.rflags = Frame->rflags.raw;
regs.rsp = Frame->rsp;
regs.ss = Frame->ss;
#elif defined(a32)
regs.ebp = Frame->ebp;
regs.edi = Frame->edi;
regs.esi = Frame->esi;
regs.edx = Frame->edx;
regs.ecx = Frame->ecx;
regs.ebx = Frame->ebx;
regs.eax = Frame->eax;
regs.InterruptNumber = Frame->InterruptNumber;
regs.ErrorCode = Frame->ErrorCode;
regs.eip = Frame->eip;
regs.cs = Frame->cs;
regs.eflags = Frame->eflags.raw;
regs.esp = Frame->esp;
regs.ss = Frame->ss;
#elif defined(aa64)
#endif
((int (*)(void *))(Handle.InterruptCallback))(&regs);
UNUSED(Frame);
}
DriverInterruptHook::DriverInterruptHook(int Interrupt, DriverFile Handle) : Interrupts::Handler(Interrupt)
{
this->Handle = Handle;
#if defined(a64) || defined(a32)
trace("Interrupt %d hooked to driver %ld", Interrupt, Handle.DriverUID);
#elif defined(aa64)
trace("Interrupt %d hooked to driver %ld", Interrupt, Handle->DriverUID);
#endif
}
}
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