Hi,
I developed option ROM Driver for my PCIe device. Driver is working fine on
Intel servers. But on Dell R720 server, I am not able to access my BAR
registers but i am able to access device config space.
In Driver supported function, verified the Device ID,Vendor ID and returned
EFI_SUCCESS. In my start function I enabled my pcie device with following
API.
Status = PciIo->Attributes(
PciIo,
EfiPciIoAttributeOperationEnable,
EFI_PCI_DEVICE_ENABLE,
NULL
);
After enabling my device, i accessed one register(at x offset) in my bar
space with following API.
Status = PciIo->Mem.Read(
PciIo,
EfiPciIoWidthUint64,
0,
x,
1,
&TmpAddr);
if(EFI_ERROR(Status)) {
Print(L"BAR READ Failed: status:%d\n",Status);
}
Above API giving error with status value as 2. But same code is working
fine in Intel servers.
Thanks
Sateesh
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