read/write PCI config

[Ken Teh <kmt@slowpoke.phy.anl.gov>]

I have a PCI device which I need to configure during init_module().
Typically, this is done by enclosing the pcibios_write_config_xxx(),
pcibios_read_config_xxx() between a cli() and a sti().

What's the equivalent in RTLinux? Is it rtl_stop_interrupts() and
rtl_allow_interrupts() or something else?

Ken