I'm trying to understand how PCI segment(domain) is related to multiple Host Bridges? Some people say multiple PCI domains corresponds to multiple Host Bridges, but some say it means multip...

Given the address of a PCI device (i.e. bus, device, function), how can one programatically read, using Win32 API calls in userspace, the config space (e.g. vendor ID, device ID) for that device? ...

I found my MMIO read/write latency is unreasonably high. I hope someone could give me some suggestions. In the kernel space, I wrote a simple program to read a 4 byte value in a PCIe device's BAR0...

Can someone very briefly point out the differences between the memory bus and address bus in computer architectures ? Also when you say memory bus does it imply that you are referring to the databu...

I have a linux (3.12) system (x86-64) with multiple devices connected to the PCI bus (PCI-e). I would like to measure the PCI bus load in the current situation and again when I connect another devi...

Is there a way to obtain PCI coordinates (bus/slot/function numbers) of devices by using Windows c/c++ API (e.g PnP Configuration Manager API)? I already know how to do it in kernel mode, I need an...

I have a NIC card and a HDD both connected on PCIe slots in a Linux machine. Ideally, I'd like to funnel incoming packets to the HDD without involving the CPU, or involving it minimally. Is it poss...

The first few fields of 'cat /proc/bus/pci/devices' are understandable. Field 1 - BusDevFunc Field 2 - Vendor Id + Device Id Field 3 - Interrupt Line Field 4 - BAR 0 and the rest of the BAR re...

I am doing direct I/O on a parallel port which is fine and necessary for speed. I would like to enumerate the available ports to offer the user a choice of ports at setup time rather than a tedious...