title: Accessing PCI Device from user space programs
body: <p>I have a device which would be interface with my processor through pcie. I have written driver for it using the existing pci file operations. </p>
  
  <p>Now my problem is how do I access it from user space programs? PCI File operations do not have IOCTL support and hence I cant make an ioctl call unlike other char devices. I cannot use pci_config_read_byte etc. functions as they are meant for kernel space(included in linux/pci.h). </p>