int32 PciHandle::read64(uint64 offset, uint64 * value)
{
if(hDriver != INVALID_HANDLE_VALUE)
{
PCICFG_Request req;
// ULONG64 result;
DWORD reslength = 0;
req.bus = bus;
req.dev = device;
req.func = function;
req.bytes = sizeof(uint64);
req.reg = (uint32)offset;
BOOL status = DeviceIoControl(hDriver, IO_CTL_PCICFG_READ, &req, sizeof(PCICFG_Request), value, sizeof(uint64), &reslength, NULL);
if (!status)
{
//std::cerr << "Error reading PCI Config space at bus "<<bus<<" dev "<< device<<" function "<< function <<" offset "<< offset << " size "<< req.bytes << ". Windows error: "<<GetLastError()<<std::endl;
}
return reslength;
}
cvt_ds cvt;
cvt.ui64 = 0;
BOOL status = ReadPciConfigDwordEx(pciAddress, (DWORD)offset, &(cvt.ui32.low));
status &= ReadPciConfigDwordEx(pciAddress, ((DWORD)offset) + sizeof(uint32), &(cvt.ui32.high));
if(status)
{
*value = cvt.ui64;
return sizeof(uint64);
}
return 0;
}
int32 PciHandle::read32(uint64 offset, uint32 * value)
{
if(hDriver != INVALID_HANDLE_VALUE)
{
PCICFG_Request req;
ULONG64 result = 0;
DWORD reslength = 0;
req.bus = bus;
req.dev = device;
req.func = function;
req.bytes = sizeof(uint32);
req.reg = (uint32)offset;
BOOL status = DeviceIoControl(hDriver, IO_CTL_PCICFG_READ, &req, sizeof(PCICFG_Request), &result, sizeof(uint64), &reslength, NULL);
*value = (uint32)result;
if (!status)
{
//std::cerr << "Error reading PCI Config space at bus "<<bus<<" dev "<< device<<" function "<< function <<" offset "<< offset << " size "<< req.bytes << ". Windows error: "<<GetLastError()<<std::endl;
}
return reslength;
}
DWORD result = 0;
if(ReadPciConfigDwordEx(pciAddress,(DWORD)offset,&result))
{
*value = result;
return sizeof(uint32);
}
return 0;
}
BOOL SysReadPciConfigDwordEx(DWORD pciAddress, DWORD regAddress, PDWORD value)
{
if (SpecialEcsAccessRequired(regAddress)) {
return SpecialEcsAccess(false, pciAddress, regAddress, value);
}
return ReadPciConfigDwordEx(pciAddress, regAddress, value);
}